# Basic Electricity Notes

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 Basic Electricity Notes EVERYTHING IS MADE OF ATOMS Imagine a pure gold ring. Divide it in half and give one of the halves away. Keep dividing and dividing and dividing. Soon you will have a piece so small you will not be able to see it without a microscope. It may be very, very small, but it is still a piece of gold. If you could keep dividing it into smaller and smaller pieces, you would finally get to the smallest piece of gold possible. It is called an atom. If you divided it into smaller pieces, it would no longer be gold. Everything around us is made of atoms. Scientists so far have found only 115 different kinds of atoms. Everything you see is made of different combinations of these atoms. PARTS OF AN ATOM So what are atoms made of? In the middle of each atom is a "nucleus." The nucleus contains two kinds of tiny particles, called protons and neutrons. Orbiting around the nucleus are even smaller particles called electrons. The 115 kinds of atoms are different from each other because they have different numbers of protons, neutrons and electrons. It is useful to think of a model of the atom as similar to the solar system. The nucleus is in the center of the atom, like the sun in the center of the solar system. The electrons orbit around the nucleus like the planets around the sun. Just like in the solar system, the nucleus is large compared to the electrons. The atom is mostly empty space. And the

2 electrons are very far away from the nucleus. While this model is not completely accurate, we can use it to help us understand static electricity. (Note: A more accurate model would show the electrons moving in 3- dimensional volumes with different shapes, called orbitals. This may be discussed in a future issue.) ELECTRICAL CHARGES Protons, neutrons and electrons are very different from each other. They have their own properties, or characteristics. One of these properties is called an electrical charge. Protons have what we call a "positive" (+) charge. Electrons have a "negative" (-) charge. Neutrons have no charge, they are neutral. The charge of one proton is equal in strength to the charge of one electron. When the number of protons in an atom equals the number of electrons, the atom itself has no overall charge, it is neutral. ELECTRONS CAN MOVE The protons and neutrons in the nucleus are held together very tightly. Normally the nucleus does not change. But some of the outer electrons are held very loosely. They can move from one atom to another. An atom that looses electrons has more positive charges (protons) than negative charges (electrons). It is positively charged. An atom that gains electrons has more negative than positive particles. It has a negative charge. A charged atom is called an "ion." Some materials hold their electrons very tightly. Electrons do not move through them very well. These things are called insulators. Plastic, cloth, glass and dry air are good insulators. Other materials have some loosely held electrons, which move through them very easily. These are called conductors. Most metals are good conductors. How can we move electrons from one place to another? One very common way is to rub two objects together. If they are made of different materials, and are both insulators, electrons may be transferred (or moved) from one to the other. The more rubbing, the more electrons move, and the larger the charges built up. (Scientists believe that it is not the rubbing or friction that causes electrons to move. It is simply the contact between two different materials. Rubbing just increases the contact area between them.)

3 Static electricity is the imbalance of positive and negative charges. OPPOSITES ATTRACT Now, positive and negative charges behave in interesting ways. Did you ever hear the saying that opposites attract? Well, it's true. Two things with opposite, or different charges (a positive and a negative) will attract, or pull towards each other. Things with the same charge (two positives or two negatives) will repel, or push away from each other. A charged object will also attract something that is neutral. Think about how you can make a balloon stick to the wall. If you charge a balloon by rubbing it on your hair, it picks up extra electrons and has a negative charge. Holding it near a neutral object will make the charges in that object move. If it is a conductor, many electrons move easily to the other side, as far from the balloon as possible. If it is an insulator, the electrons in the atoms and molecules can only move very slightly to one side, away from the balloon. In either case, there are more positive charges closer to the negative balloon. Opposites attract. The balloon sticks. (At least until the electrons on the balloon slowly leak off.) It works the same way for neutral and positively charged objects.

4 BASIC ELECTRONIC CIRCUITS EXPLAINED In this section we will discuss what a circuit is Circuit A circuit is a path for electrons to flow through. The path is from a power sources negative terminal, through the various components and on to the positive terminal. Think of it as a circle. The paths may split off here and there but they always form a line from the negative to positive. NOTE: Negatively charged electrons in a conductor are attracted to the positive side of the power source. Conductor A conductor is a material (usually a metal such as copper) that allows electrical current to pass easily through. The current is made up of electrons. This is opposed to an insulator which prevents the flow of electricity through it.

5 Simple Circuit If we break a circuit down to it's elementary blocks we get: 1) A Power Source -- eg: battery 2) A Path -- eg: a wire 3) A Load -- eg: a lamp 4) A Control -- eg: switch (Optional) 5) An indicator -- eg: Meter (Optional) Series Circuit A series circuit is one with all the loads in a row. Like links in a chain. There is only ONE path for the electricity to flow. If this circuit was a string of light bulbs, and one blew out, the remaining bulbs would turn off. NOTE: The squiggly lines in the diagram are the symbol for Resistors. The parallel lines are the symbol for a battery. Parallel Circuit A parallel circuit is one that has two or more paths for the electricity to flow. In other words, the loads are parallel to each other. If the loads in this circuit were light bulbs and one blew out there is still current flowing to the others as they are still in a direct path from the negative to positive terminals of the battery. There are specific properties to a parallel circuit that will be described in another section.

6 Combination Circuit A combination circuit is one that has a "combination" of series and parallel paths for the electricity to flow. Its properties are a synthesis of the two. In this example, the parallel section of the circuit is like a subcircuit and actually is part of an over-all series circuit.

7 VOLTAGE, CURRENT & RESISTANCE EXPLAINED In electronics we are dealing with voltage, current and resistance in circuits. In the next section we'll learn that by using Ohm's Law we can determine one value by knowing the other two (For example: Figure out Current by using Voltage and Resistance values). So it is important to firmly grasp the basics of Voltage/Current/Resistance first. We will describe these electrical terms using an analogy that closely resembles electronics HYDRAULICS. Voltage Voltage is the electrical force, or "pressure", that causes current to flow in a circuit. It is measured in VOLTS (V or E). Take a look at the diagram. Voltage would be the force that is pushing the water (electrons) forward.

8 Current Current is the movement of electrical charge - the flow of electrons through the electronic circuit. Current is measured in AMPERES (AMPS, A or I). Current would be the flow of water moving through the tube (wire). Resistance Resistance is anything that causes an opposition to the flow of electricity in a circuit. It is used to control the amount of voltage and/or amperage in a circuit. Everything in the circuit causes a resistance (even wire). It is measured in OHMS ( ).

9 Ohm s Law is a set of formulas used in electronics to calculate an unknown amount of current, voltage or resistance. It was named after the German physicist Georg Simon Ohm. Born Died TECHNICAL DEFINITION ALERT! Ohm's Law is a formulation of the relationship of voltage, current, and resistance, expressed as: Where: V is the Voltage measured in volts I is the Current measured in amperes R is the resistance measured in Ohms Therefore: Volts = Amps times Resistance Ohms Law is used to calculate a missing value in a circuit.

10 MULTIMETER ULTRA BASICS A handheld multimeter is the most important tool you will use in electronics. You will use it to determine voltage/amperage/resistance in a circuit, learn the relationship of V, I (amperage) & R to each other, troubleshoot, test circuits and countless other tasks. FEATURES Here are the features you will need or should look for in a meter: 1) It should measure: a. AC Voltage b. DC voltage c. Amperage d. Resistance e. Capacitance - Some do not have this. If so, find one that does or buy a capacitance meter separate. Don't try to convince yourself you do not need this feature. 2) Continuity Checker with audible beep. 3) Diode Checker with audible beep. 4) Optional but HIGHLY recommended is a frequency counter. 5) Try to get a meter with auto ranging and not one that you have to keep turning a dial (or pushing a button) to shift to different ranges. There is nothing more annoying then having to take your hands away from the probes to change from 300mV to +10Vs. 6) Make some alligator clips for the probe tips. My Fluke didn't come with them but I just bought a few push-on ones later.

11 NAME SECTION Electricity Review *List the three particles and their charges that make up an atom. Particle Charge *What is electricity? *What is a conductor? *What is an insulator? *Describe who the valence ring determines what type of material is produced by the number of electrons in it. *List six ways that we move electrons (EMF) *Draw an atom.

12 Name Section Partners Names + - Draw a simple closed circuit. + - Draw a controlled circuit using a SPST switch. + - Draw a circuit controlled by two switches (SPDT). + -

13 Draw a circuit that can turn two lights on and off alternately (when one is on the other should turn off) using only one switch. Draw an example of a series and parallel circuit. What is the difference between a battery and a cell? What does AC and DC stand for? Where does electricity want to go? 12 Volts 2 Ohms Amps I=20 R=2 E= V 10 A R 100 A 10 R V 5 A 25 V R 10 R 100 V A ACROSS 2 Particles that have no charge 4 Allows electricity to flow through it freely 6 Fuses and protect electrical circuits and devices 9 The "A" in AC 10 Measures electric pressure or force 12 Electricity wants to travel to here 16 Resists the flow of electricity 17 Electricity travels at the speed of (186,000miles/sec.) 19 The center of the atom 20 Measures the current of flow through a circuit 21 Multiple cells hooked up together DOWN 1 Particles that have a positive charge 3 Particles that have a negative charge 5 The "D" in DC 7 Lightning is a form of of this type of EMF 8 Moving electrons 11 Most common form of EMF 13 The outer electron ring of an atom 14 The light should be on in this type of circuit 15 Measure the resistance in a circuit 18 A side effect of resistance

14 Introduction to Electricity F U V N Y A E N Y M E W E N C D C P T U L G E E D E W F R Y W K R C T O A F S P O C O M C Q D D V O R X R B A F W Q D O D O E O I Q O T S T R H R E W O P A F Q B E I A E R K V K G F C K N U Q A C N U E T R O N S L J O M V Q W F L Z Z W O T X B A D N T Q V O L T A G E F E X Q J L F V Z F J L A U V S N I E U I R G S R N M P U Q N R M M I Z E V Z A P L V X D K D I R C T O V Q T I T T H C T I W S Y T L N Q E Y X B K A N R J B T N T A J C U R R E N T E P A T T O K Z D G V H Q Z I B A E O O A E O E A N E O D V S W R U F R V R M C I U J X U E X J R C L T J L U E I P L T M O T A N V A I H E Z O B G Z W G N H A U X I E G K D Z P Y T F M C F U S E B B V W T F V Q J P L A S T I C L T G R J O K L N P S Y M H A T C J Q S D N M L N Z N O I T A N I B M O C E L C L I Z N L J H J C L I Q A K K Y I G C R S P O S I T I V E A C N G Y S H F B L K H V A M P E R E S I S T A N C E G O L A O L G N Z X O Q R K O E Q D W O A E V C T E N C R I C D L S M H O I N Y O G F X X T Y Z U M U L T I M E T E R D L F A P P T E U L V K F Y K P C D N P B R T U T T E N H M O L U R P O A M J D Q Z L W B F P D I I O G C K Y A A C G G E D L A R U I H J D Z F Y M W G F S F I A R R Q L V B G D A I L W P R N F H M V S Y O Z I Z W X E C I O W Y C S G P E B M L E U U D W J Y H Y T C I O Y Q P F C U C J T Y S Q S L N B J M R S T Y N Y C E P Y Z K O L K P V F T X E P N D E F P G Y F Y D S J H M P L F F N G F F S J Z Q L P N R X T R P D H I B Z L F S G F O A I Y P K Z A N K G W M J U Y F J L M N B V Y D F P F Z E M N M Y C F F U X U S M J C W B V N M V V S S E J J M L O N K B W F K W H T O G X W N V E I T R F T D S N T S N U E R C E W N H O D U D E G T M Q N I D Z W K W B T K B G G Z F F I D A F J I P G E E U C W Y A S H Z E T Q O W W F P T E L N L K K Z E V F L J V Y M T I R R G Y W N X V W S A J T V S P M U N D D E L K AMPERES ATOM AUDIBLE BATTERY BREAKER CAPACITANCE CERAMIC CHEMICAL CIRCUIT CLOUD COMBINATION COMPOUND CONDUCTOR CONTINUITY CONTROL COPPER CURRENT DPDT ELECTRONS ELECTRICITY ELEMENT EMF FORCE FUSE GLASS GOLD GROUND HYDRAULICS INSULATOR ION LIGHT LOAD MAGNETIC MOTOR MULTIMETER NEGATIVE NEUTRAL NUETRONS OHMS PARALLEL PATH PLASTIC POSITIVE POWER PROTONS RESISTANCE SERIES SILVER SOURCE SPDT SPST STATIC SWITCH VALENCE VOLTAGE WIRE

### Two kinds of electrical charges

ELECTRICITY NOTES Two kinds of electrical charges Positive charge Negative charge Electrons are negatively charged Protons are positively charged The forces from positive charges are canceled by forces

### ELECTRICAL FUNDAMENTALS

General Electricity is a form of energy called electrical energy. It is sometimes called an "unseen" force because the energy itself cannot be seen, heard, touched, or smelled. However, the effects of

### Chapter 11- Electricity

Chapter 11- Electricity Course Content Definition of Electricity Circuit Diagrams Series and Parallel Circuits Calculating total resistances Measurement of Electricity Ammeters and Voltmeters Ohm s Law

### Experiment 5-Electric Charges Lab

Experiment 5-Electric Charges Lab So what are atoms made of? In the middle of each atom is a "nucleus." The nucleus contains two kinds of tiny particles, called protons and neutrons. Orbiting around the

### Chapter 17 Study Questions Name: Class:

Chapter 17 Study Questions Name: Class: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. If two charges repel each other, the two charges

### CHAPTER 17 NOTES FOR EIGHTH GRADE PHYSICAL SCIENCE ALL MATTER IS COMPOSED OF VERY SMALL PARTICLES CALLED ATOMS.

CHAPTER 17 NOTES FOR EIGHTH GRADE PHYSICAL SCIENCE ALL MATTER IS COMPOSED OF VERY SMALL PARTICLES CALLED ATOMS. THE LAW OF ELECTRIC CHARGES STAES THAT LIKE CHARGES REPEL AND OPPOSITE CHARGES ATTRACT. BECAUSE

### PS-6.2 Explain the factors that determine potential and kinetic energy and the transformation of one to the other.

PS-6.1 Explain how the law of conservation of energy applies to the transformation of various forms of energy (including mechanical energy, electrical energy, chemical energy, light energy, sound energy,

### 1) ASSOCIATE ELEMENTARY PARTICLES WITH THEIR ELECTRICAL CHARGE

Name Date STUDY GUIDE CHAPTER 5 ELECTRICITY AND MAGNETISM 1) ASSOCIATE ELEMENTARY PARTICLES WITH THEIR ELECTRICAL CHARGE Scientists now know that an atom is composed of even smaller particles of matter:

### Investigating Electrical Energy Workshop. QUT Extreme Engineering

Investigating Electrical Energy Workshop QUT Extreme Engineering Investigating Electrical Energy Introduction This workshop is designed for grades 6-7, to give them some hands-on experience in building

### Electricity Review-Sheet

Name: ate: 1. The unit of electrical charge in the MKS system is the. volt. ampere. coulomb. mho 2. Which sketch best represents the charge distribution around a neutral electroscope when a positively

### Electrical Fundamentals Module 3: Parallel Circuits

Electrical Fundamentals Module 3: Parallel Circuits PREPARED BY IAT Curriculum Unit August 2008 Institute of Applied Technology, 2008 ATE310- Electrical Fundamentals 2 Module 3 Parallel Circuits Module

Table of Contents 1. Introduction 3 2. Electrical Fundamentals 4 Electron Theory 4 Matter 4 MOLECULE 5 The atom 6 Atom construction 7 Electrical charges 11 Balanced atoms 12 Ions 13 Electron orbits 15

### Science AS90191 Describe Aspects of Physics.

Circuits and components Science AS90191 Describe Aspects of Physics. An electric current is the movement of electrons (negatively charged particles). A circuit is made up of components connected together

### STUDY GUIDE: ELECTRICITY AND MAGNETISM

319 S. Naperville Road Wheaton, IL 60187 www.questionsgalore.net Phone: (630) 580-5735 E-Mail: info@questionsgalore.net Fax: (630) 580-5765 STUDY GUIDE: ELECTRICITY AND MAGNETISM An atom is made of three

### Let s Explore Electricity Basics!

Let s Explore Electricity Basics! Instructor Guide Subject Area Unit Grade Time Science Physical Science 5th grade 45 minutes Overview This lesson provides instruction on static electricity and the two

### Lesson Plan for Introduction to Electricity

Lesson Plan for Introduction to Electricity Last Updated: 01/16/2009 Updated by: Science For Kids Electricity Lesson 1 Table of Contents Lesson Summary... 3 Lesson Information... 4 Activity Descriptions

### Electrostatics. Electrostatics Version 2

1. A 150-watt lightbulb is brighter than a 60.-watt lightbulb when both are operating at a potential difference of 110 volts. Compared to the resistance of and the current drawn by the 150-watt lightbulb,

### Course description: Introduces the student to basic electricity with an emphasis on Ohms Law.

The following is presented for information purposes only and comes with no warranty. See http://www.bristolwatch.com/ Course Title: Basic Electricity and Ohms Law Course description: Introduces the student

### What is a multimeter?

What is a multimeter? A multimeter is a devise used to measure voltage, resistance and current in electronics & electrical equipment It is also used to test continuity between to 2 points to verify if

### Introduction to Electricity & Magnetism. Dr Lisa Jardine-Wright Cavendish Laboratory

Introduction to Electricity & Magnetism Dr Lisa Jardine-Wright Cavendish Laboratory Examples of uses of electricity Christmas lights Cars Electronic devices Human body Electricity? Electricity is the presence

### How do you measure voltage and current in electric circuits? Materials

20A Electricity How do you measure voltage and current in electric circuits? Electricity Investigation 20A We use electricity every day, nearly every minute! In this Investigation you will build circuits

### Objectives 200 CHAPTER 4 RESISTANCE

Objectives Explain the differences among conductors, insulators, and semiconductors. Define electrical resistance. Solve problems using resistance, voltage, and current. Describe a material that obeys

### Vocabulary Electrical Energy Negative charge Electric Field Conductor Insulator Voltage Current Circuit breaker Fuse. Chapter 17.

Introduction to Electricity Table of Contents Bellringer Write a definition for electric charge in your own words in your science journal. When do you experience electric charges most, in winter or in

### Table of Contents. The Basics of Electricity 2. Using a Digital Multimeter 4. Testing Voltage 8. Testing Current 10. Testing Resistance 12

Table of Contents The Basics of Electricity 2 Using a Digital Multimeter 4 IDEAL Digital Multimeters An Introduction The Basics of Digital Multimeters is designed to give you a fundamental knowledge of

### Shining a Light. Design & Technology. Year 9. Structure of an electric torch. Shining a Light

Looking at electronic circuits and what is meant by current, voltage, and resistance. Shining a Light Have you ever taken an electric torch to pieces to find out how it works? Look at the diagram below

### A. Directions: Pick the definition in column B that best matches the word in column A. Write the letter of the definition on the blank line.

1 LY from the series lectricity and Magnetism ame P -. Directions: Pick the definition in column B that best matches the word in column. Write the letter of the definition on the blank line. 1. repel 2.

### Series and Parallel Circuits

Series and Parallel Circuits Direct-Current Series Circuits A series circuit is a circuit in which the components are connected in a line, one after the other, like railroad cars on a single track. There

### Georgia Performance Standards Framework for Physical Science 8 th Grade. Powering Satellites

The following instructional plan is part of a GaDOE collection of Unit Frameworks, Performance Tasks, examples of Student Work, and Teacher Commentary. Many more GaDOE approved instructional plans are

### Introduction to Electricity

ENERGY USE AND DELIVERY LESSON PLAN 3.1 Introduction to Electricity This lesson is designed for 3rd 5th grade students in a variety of school settings (public, private, STEM schools, and home schools)

### Electricity and Magnetism

Electricity and Magnetism A Science AZ Physical Series Word Count: 1,668 Electricity and Magnetism Written by David Dreier Visit www.sciencea-z.com www.sciencea-z.com Electricity and Magnetism Key elements

### Ohm's Law and Circuits

2. Conductance, Insulators and Resistance A. A conductor in electricity is a material that allows electrons to flow through it easily. Metals, in general, are good conductors. Why? The property of conductance

### 4 th Grade Science Unit A: Physical Sciences Chapter 1: Electricity Lesson 1: How do charged objects behave?

4 th Grade Science Unit A: Physical Sciences Chapter 1: Electricity Lesson 1: How do charged objects behave? electric charge An electric charge is a property of some part of matter, described as positive

### Student Content Brief Advanced Level

Student Content Brief Advanced Level Electric Circuits Background Information There are a variety of forces acting on the body of the Sea Perch. One important force is pushing electrons through the wires

### The current that flows is determined by the potential difference across the conductor and the resistance of the conductor (Ohm s law): V = IR P = VI

PHYS1000 DC electric circuits 1 Electric circuits Electric current Charge can move freely in a conductor if an electric field is present; the moving charge is an electric current (SI unit is the ampere

### EDEXCEL NATIONAL CERTIFICATE/DIPLOMA UNIT 5 - ELECTRICAL AND ELECTRONIC PRINCIPLES NQF LEVEL 3 OUTCOME 1 - D.C. CIRCUITS

EDEXCEL NATIONAL CERTIFICATE/DIPLOMA UNIT 5 - ELECTRICAL AND ELECTRONIC PRINCIPLES NQF LEVEL 3 OUTCOME - D.C. CIRCUITS Be able to use circuit theory to determine voltage, current and resistance in direct

### Electricity & Electronics Merit Badge

Electricity & Electronics Merit Badge Class 1 Name Electricity Merit Badge Class 1-2010 National Scout Jamboree 1 CLASS 1 What is Covered 1. Careers. 2. Basic electronics/electricity tools. 3. Safety and

### Chapter 5. Electrical Energy

Chapter 5 Electrical Energy Our modern technological society is largely defined by our widespread use of electrical energy. Electricity provides us with light, heat, refrigeration, communication, elevators,

### Test Bank - Chapter 4 Multiple Choice

Test Bank - Chapter 4 The questions in the test bank cover the concepts from the lessons in Chapter 4. Select questions from any of the categories that match the content you covered with students. The

### A Science A Z Physical Series Word Count: 1,878. Written by David Dreier. Visit

A Science AZ Physical Series Word Count: 1,878 Written by David Dreier Visit www.sciencea-z.com www.sciencea-z.com KEY ELEMENTS USED IN THIS BOOK The Big Idea: Since the late 1800s, electricity has brightened

### Section B: Electricity

Section B: Electricity We use mains electricity, supplied by power stations, for all kinds of appliances in our homes, so it is very important to know how to use it safely. In this chapter you will learn

### Ch. 20 Electric Circuits

Ch. 0 Electric Circuits 0. Electromotive Force Every electronic device depends on circuits. Electrical energy is transferred from a power source, such as a battery, to a device, say a light bulb. Conducting

### 3.- What atom s particle moves through a conductor material? 4.- Which are the electric components of an elemental electric circuit?

1.- What is electricity? 2.- Write down the name of the atom s particles. 3.- What atom s particle moves through a conductor material? 4.- Which are the electric components of an elemental electric circuit?

### Chapter 13: Electric Circuits

Chapter 13: Electric Circuits 1. A household circuit rated at 120 Volts is protected by a fuse rated at 15 amps. What is the maximum number of 100 watt light bulbs which can be lit simultaneously in parallel

### Circuit symbol. Each of the cells has a potential difference of 1.5 volts. Figure 1. Use the correct answer from the box to complete the sentence.

Q.(a) Draw one line from each circuit symbol to its correct name. Circuit symbol Name Diode Light-dependent resistor (LDR) Lamp Light-emitting diode (LED) (3) Figure shows three circuits. The resistors

### Electricity. Atoms. Protons, Neutrons, and Electrons. Electricity is Moving Electrons. Atom

Electricity is a mysterious force. We can t see it like we see the sun. We can t hold it like we hold coal. We know when it is working, but it is hard to know exactly what it is. Before we can understand

### BUILDING A BASIC CIRCUIT

Teacher Information BUILDING A BASIC CIRCUIT NSES9-12.2 Physical Science: Interactions of Energy and Matter Adaptations Some adaptations and modifications that may assist a student with visual and/or other

### Reading Comprehension Skills Preview the Book Compare and Contrast How to Read Charts Main Idea and Details

TM Red Edition Grade 3 4 reading level Purple Edition Grade 4 5 reading level Objectives Understand that electric charge is a property of matter. Compare static electricity and current electricity. Describe

### How Does it Flow? Electricity, Circuits, and Motors

How Does it Flow? Electricity, Circuits, and Motors Introduction In this lab, we will investigate the behavior of some direct current (DC) electrical circuits. These circuits are the same ones that move

### 1. The diagram below represents magnetic lines of force within a region of space.

1. The diagram below represents magnetic lines of force within a region of space. 4. In which diagram below is the magnetic flux density at point P greatest? (1) (3) (2) (4) The magnetic field is strongest

### Lab 3 - DC Circuits and Ohm s Law

Lab 3 DC Circuits and Ohm s Law L3-1 Name Date Partners Lab 3 - DC Circuits and Ohm s Law OBJECTIES To learn to apply the concept of potential difference (voltage) to explain the action of a battery in

### ELECTRICITY UNIT SCIENCE AND TECHNOLGY- CYCLE 3 NAME GROUP. Teacher: Mr. D. Strina E-mail: dstrina@swlauriersb.qc.ca MC CAIG ELEMENTARY SCHOOL

ELECTRICITY UNIT SCIENCE AND TECHNOLGY- CYCLE 3 NAME GROUP Teacher: Mr. D. Strina E-mail: dstrina@swlauriersb.qc.ca MC CAIG ELEMENTARY SCHOOL CLASS NOTES--- Atom An atom is the smallest particle characterizing

### Measuring Electric Phenomena: the Ammeter and Voltmeter

Measuring Electric Phenomena: the Ammeter and Voltmeter 1 Objectives 1. To understand the use and operation of the Ammeter and Voltmeter in a simple direct current circuit, and 2. To verify Ohm s Law for

### Lesson Plan for Electric Circuits

Lesson Plan for Electric Circuits Last Updated: 11/6/2009 Updated by: Sci4Kids Electric Circuits Lesson 1 Lesson Summary Lesson name Audience Focus Standards (4 th grade) Fourth Grade AZ standard(s) applied

### A Learning Guide for Model Rocket Launch Systems

A Learning Guide for Model Rocket Launch Systems Including: Schematics, Electrical Theory and Study Problems Edited and updated by Ann Grimm EstesEducator.com educator@estesrockets.com 800.820.0202 2012

### Electricity. Electrostatics. Charge vs Charged. + / - terminology

Electricity Electrostatics Charge vs Charged + / - terminology 1 Charge Facts 1.) Charge 2.) 1 C of charge. 3.) You can convert # of electrons into charge and vice versa 4.) Opposites Attract Like charges

### Essential Electrical Concepts

Essential Electrical Concepts Introduction Modern vehicles incorporate many electrical and electronic components and systems: Audio Lights Navigation Engine control Transmission control Braking and traction

### Experiment #6, Series and Parallel Circuits, Kirchhoff s Laws

Physics 182 Spring 2013 Experiment #6 1 Experiment #6, Series and Parallel Circuits, Kirchhoff s Laws 1 Purpose Our purpose is to explore and validate Kirchhoff s laws as a way to better understanding

### Odyssey of the Mind Technology Fair. Simple Electronics

Simple Electronics 1. Terms volts, amps, ohms, watts, positive, negative, AC, DC 2. Matching voltages a. Series vs. parallel 3. Battery capacity 4. Simple electronic circuit light bulb 5. Chose the right

Homemade Batteries #396 Homemade BATTERIES Copyright 2003 Learn how to build a powerful homemade water cell battery right in your own home. Research has proving that you can build a simple water cell battery,

### S E C T I O N O N E : I N T R O D U C T I O N

S E C T I O N O N E : I N T R O D U C T I O N What you will learn: What electricity is What an electrical current is How electricity is created How electricity is used to perform useful tasks The physical

### 101 BASICS SERIES LEARNING MODULE 2: FUNDAMENTALS OF ELECTRICITY. Cutler-Hammer

101 BASICS SERIES LEARNING MODULE 2: FUNDAMENTALS OF ELECTRICITY Cutler-Hammer WELCOME Welcome to Module 2, Fundamentals of Electricity. This module will cover the fundamentals of electricity in a practical

Radio Merit Badge Boy Scouts of America Module 2 Electronics, Safety & Careers BSA National Radio Scouting Committee2012 Class Format Three modules any order Module 1 Intro To Radio Module 2 Electronic

### Conductors and Insulators

Chapter 4 Conductors and Insulators Introduction We have seen in earlier activities that electricity flows through a complete path called a circuit. Within a circuit, electricity flows through conductors.

### The Atom and the Periodic Table. Electron Cloud Structure Energy Levels Rows on the Periodic Table Bohr Models Electron Dot Diagrams

The Atom and the Periodic Table Electron Cloud Structure Energy Levels Rows on the Periodic Table Bohr Models Electron Dot Diagrams Review The vertical columns in the periodic table are called groups.

### Series and Parallel. How we wire the world

Series and Parallel How we wire the world Series vs Parallel Circuits Series Circuit Electrons only have one path to flow through. Parallel Circuit There are MULTIPLE paths for the current to flow through.

### 7. What is the current in a circuit if 15 coulombs of electric charge move past a given point in 3 seconds? (1) 5 A (3) 18 A (2) 12 A (4) 45 A

1. Compared to the number of free electrons in a conductor, the number of free electrons in an insulator of the same volume is less the same greater 2. Most metals are good electrical conductors because

### AP Physics Electricity and Magnetism #4 Electrical Circuits, Kirchoff s Rules

Name Period AP Physics Electricity and Magnetism #4 Electrical Circuits, Kirchoff s Rules Dr. Campbell 1. Four 240 Ω light bulbs are connected in series. What is the total resistance of the circuit? What

### 6.7: Explaining the Periodic Table pg. 234

Unit C: Atoms, elements, and Compounds 6.7: Explaining the Periodic Table pg. 234 Key Concepts: 3. Elements are organized according to their atomic number and electron arrangement on the periodic table.

### SNC1L Unit 3 Electrical Circuits

SNC1L Unit 3 Electrical Circuits SNC1L Science Unit 3 - Introduction Introduction Electricity is an energy source that we encounter every day. We are very familiar with what electrical energy can do, but

### Electrical Measurements

Electrical Measurements Experimental Objective The objective of this experiment is to become familiar with some of the electrical instruments. You will gain experience by wiring a simple electrical circuit

### very small Ohm s Law and DC Circuits Purpose: Students will become familiar with DC potentiometers circuits and Ohm s Law. Introduction: P31220 Lab

Ohm s Law and DC Circuits Purpose: Students will become familiar with DC potentiometers circuits and Ohm s Law. Introduction: Ohm s Law for electrical resistance, V = IR, states the relationship between

### ELECTRICAL CIRCUITS. Electrical Circuits

Electrical Circuits A complete path, or circuit, is needed before voltage can cause a current flow through resistances to perform work. There are several types of circuits, but all require the same basic

### 1 of 7 3/23/2010 2:45 PM

1 of 7 3/23/2010 2:45 PM Chapter 30 Homework Due: 8:00am on Tuesday, March 23, 2010 Note: To understand how points are awarded, read your instructor's Grading Policy. [Return to Standard Assignment View]

### SIMPLE ELECTRIC CIRCUITS

-18- Preparatory Questions: (also read this guide sheet, which contains some of the answers!) 1. State Ohm s Law, defining every term in the equation. 2. If a bulb connected directly to a 6 V battery glows

### Name: Date: Regents Physics Mr. Morgante UNIT 4B Magnetism

Name: Regents Physics Date: Mr. Morgante UNIT 4B Magnetism Magnetism -Magnetic Force exists b/w charges in motion. -Similar to electric fields, an X stands for a magnetic field line going into the page,

### 8.2. Electric Current. Did You Know? 8-2A. Lighting It Up. Words to Know. Find Out ACTIVITY. Safety. Materials. What Did You Find Out?

8.2 Electric Current Current electricity is the flow of charged particles in a complete circuit. The unit for measuring electric current is the ampere (A), which is defined as one coulomb of charge passing

### Static electricity. Sorting out how charges interact. Sorting out how charges interact - - - + q B. q A. The atom

Static electricity toms, Electrons and Ions The atom Electron cloud. Negatively charged Occupies most of volume of atom Nucleus Contains protons and neutrons Positively charged 99.9% of mass is concentrated

### People s Physics Book

The Big Ideas: The name electric current is given to the phenomenon that occurs when an electric field moves down a wire at close to the speed of light. Voltage is the electrical energy density (energy

### Wires & Connections Component Circuit Symbol Function of Component. Power Supplies Component Circuit Symbol Function of Component

Lista Dei Simboli Dei Circuiti Per i Componenti Elettronici Wires & Connections Wire Wires joined Wires not joined To pass current very easily from one part of a circuit to another. A 'blob' should be

### Principles of Imaging Science I (RAD119) Physical Environment Classifications. Atomic Structure. Matter

Principles of Imaging Science I (RAD119) Atomic Structure Atomic Structure & Matter In radiography, it is important to understand the structure of matter and the fundamentals of electromagnetic radiation

### This topic explores the key concepts of magnetism as they relate to: the phenomenon of magnetism magnetic forces and fields a theory of magnetism.

Magnetism Introduction This topic explores the key concepts of magnetism as they relate to: the phenomenon of magnetism magnetic forces and fields a theory of magnetism. Key concepts of magnetism The activities

### Electricity. Electricity: The Mysterious Force. 32 Intermediate Energy Infobook CARBON ATOM SEVERAL COMMON ELEMENTS

Electricity: The Mysterious Force What exactly is the mysterious force we call electricity? It is simply moving electrons. And what exactly are electrons? They are tiny particles found in atoms. Everything

### Aircraft Electrical System

Chapter 9 Aircraft Electrical System Introduction The satisfactory performance of any modern aircraft depends to a very great degree on the continuing reliability of electrical systems and subsystems.

### Chapter 18: Circuits and Circuit Elements 1. Schematic diagram: diagram that depicts the construction of an electrical apparatus

Chapter 18: Circuits and Circuit Elements 1 Section 1: Schematic Diagrams and Circuits Schematic Diagrams Schematic diagram: diagram that depicts the construction of an electrical apparatus Uses symbols

### Experiment #5, Series and Parallel Circuits, Kirchhoff s Laws

Physics 182 Summer 2013 Experiment #5 1 Experiment #5, Series and Parallel Circuits, Kirchhoff s Laws 1 Purpose Our purpose is to explore and validate Kirchhoff s laws as a way to better understanding

### TOPIC 3.1: ELECTRIC CIRCUITS

TOPIC 3.1: ELECTRIC CIRCUITS S4P-3-1 S4P-3-2 S4P-3-3 S4P-3-4 S4P-3-5 S4P-3-6 Describe the origin of conventional current and relate its direction to the electron flow in a conductor. Describe the historical

### Circuits and Resistivity

Circuits and Resistivity Look for knowledge not in books but in things themselves. W. Gilbert OBJECTIVES To learn the use of several types of electrical measuring instruments in DC circuits. To observe

### Big Idea: Electricity can exist as static electricity or travel as a current through a conductor. Unit 7: Electricity

Big Idea: Electricity can exist as static electricity or travel as a current through a conductor. Unit 7: Electricity Olive: Hi class. Today we re going to talk about electricity. Phinny: Grinning. That

### Feedback for the homework task: The Rutherford experiment on the structure of the atom

General point: You should not say amount of electrons/protons/neutrons/atoms you can count electrons/protons/neutrons/atoms so you say number of electrons/protons/neutrons/atoms etc. Amount is used for

### Voltage, Current, Resistance, Capacitance and Inductance

Voltage, Current, Resistance, Capacitance and Inductance Really basic electrical engineering. 1 Electricity and conductors Electricity is the movement of electrons. Electrons move easily through a conductor

### Grade 9 - Characteristics of Electricity

Purpose: This document is for grade 9 teachers to use as a pre-assessment for the Characteristics of Electricity unit. It assesses students understanding of the of the end of unit knowledge outcomes from

### Question Bank. Electric Circuits, Resistance and Ohm s Law

Electric Circuits, Resistance and Ohm s Law. Define the term current and state its SI unit. Ans. The rate of flow of charge in an electric circuit is called current. Its SI unit is ampere. 2. (a) Define

### ATOMS AND THE PERIODIC TABLE CHAPTER 3 PHYSICAL SCIENCE

ATOMS AND THE PERIODIC TABLE CHAPTER 3 PHYSICAL SCIENCE Chapter 3 Vocabulary Words (27 words) Nucleus Atomic number Proton Mass number Neutron Isotopes Electron Atomic mass unit (amu) Energy level Average

Table of Contents Title Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Rotary Switch Functional Buttons The Effectiveness

### DVD-77C ESD Control for Material Handlers

DVD-77C ESD Control for Material Handlers Below is a copy of the narration for DVD-77C. The contents for this script were developed by a review group of industry experts and were based on the best available