R C DMM. b a. Power Supply. b a. Power Supply DMM. Red + Black - Red + Black -

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "R C DMM. b a. Power Supply. b a. Power Supply DMM. Red + Black - Red + Black -"

Transcription

1 Sample Lab Report - PHYS 231 The following is an example of a well-written report that might be submitted by a PHYS 231 student. It begins with a short statement of what is being measured, and why. The procedure and results are then briefly described for each major part of the exercise. The description of the procedure need not be lengthy, but must be sufficient for someone familiar with the apparatus to use it to reproduce your results. A diagram is often useful to convey your setup. Single numbers may be put into the text, but if several values are needed they should be in a table and perhaps a graph. Tables and graphs need to be well labeled, and should be mentioned in the text. The report ends with a summary or conclusion, which must be consistent with the preceding data and analysis. This document is typed and uses computer-drawn figures to facilitate posting on the web. You may prepare any or all portions of your reports by hand, as convenient, but be sure the text is legible and figures are clear. Graphs should be done on graph paper or by computer, not as rough sketches.

2 PHYS 231 Experiment RC circuits by A. Student with O. K. Partner Submitted February 30, 2753 Introduction We studied the voltage across a capacitor as it charged or discharged through a known resistor. The goal is to show that the charge/discharge follows an exponential function and that the time constant is R C, where R is the effective resistance of the voltmeter and resistor in parallel. Procedure and Results for charge/discharge curves The circuits for charging and discharging the capacitor are sketched below. They are wired so that the initial fully charged or fully discharged state can be quickly reached in one switch position, and then the discharge or charge starts when the switch is set to the other position. A stopwatch was started when the switch was thrown, and the DMM read at known times until the voltage essentially stopped changing. Power Supply Red + Black - R b a C + - DMM Circuit for monitoring charging. Power Supply Red + Black - b a + R C DMM - Circuit for monitoring discharging. Results for charging and discharging, with marked values R = 1 MΩ and C = 100 µf, are shown in the attached graphs (from Graphical Analysis). The solid lines are fits to V*(1-exp(-T*x))+K V*exp(-T*x)+K charging discharging

3 which were derived in the lab manual. These lines fit the data well, confirming that the charge and discharge are exponential. Procedure and Results for time constant Only the discharging circuit was used for this part. The capacitor was charged to 10.0 V and the time to discharge to 1/e of that value, 3.68 V, was measured with the stopwatch. The discharge was repeated two or three times and averaged to reduce error. This was done for both capacitors and again when connected in parallel. Resistor values were measured with the DMM instead of using the marked values. Data for the single capacitors is tabulated below R (ohm) τ 100 µf τ ave 100 µf τ, 220 µf τ ave220 µf 55.1K too short 13.72, 13.87, K 11.58, 11.20, , 26.07, K 21.47, 22.25, , M 50.12, , M , too long and for the parallel combination R (ohm) τ ( ) µf τ ave 55.1K 19.48, 19.44, K 37.39, K 72.02, M The average time constant was plotted against the parallel resistance of the resistor and the meter, assumed to be 10MΩ. The results are in the attached graphs. Since we expect τ = R C, the graphs should be straight lines with slope C. This appears to be the case, with values of C from the slope as tabulated: nominal capacitance (µf) from slope (µf) 105 ± ± ± 0.6 Note that the sum of the capacitances determined from the individual slopes is in good agreement with the capacitance from the slope of the parallel combination. Conclusion We have measured the charge and discharge of an RC combination. As expected, the charge/discharge voltage is exponential in time, with a time constant of RC. Capacitors connected in parallel have the sum of the individual capacitances.

4 Graph V (volts) t Automatic Curve Fit on : f(x)= V*exp(-T*x) +K V= 9.89 T= K= Mean Square Error:

5 Graph V (volts) t Automatic Curve Fit on : f(x)= V*(1-exp(-T*x)) +K V= 8.85 T= K= Mean Square Error:

6 Graph Data Set 2 Data Set tau e e e e e e e e e e+06 Reff (ohms) Statistics: Slope Y Intercept C.O.R ±4.33e ± Data Set ±3.79e ± Data Set ±6.23e ±

Physics 260 Calculus Physics II: E&M. RC Circuits

Physics 260 Calculus Physics II: E&M. RC Circuits RC Circuits Object In this experiment you will study the exponential charging and discharging of a capacitor through a resistor. As a by-product you will confirm the formulas for equivalent capacitance

More information

RC CIRCUIT. THEORY: Consider the circuit shown below in Fig. 1: a S. V o FIGURE 1

RC CIRCUIT. THEORY: Consider the circuit shown below in Fig. 1: a S. V o FIGURE 1 RC CIRCUIT OBJECTIVE: To study the charging and discharging process for a capacitor in a simple circuit containing an ohmic resistance, R, and a capacitance, C. THEORY: Consider the circuit shown below

More information

PHY 101 Lab 7 on Electric circuits: Direct current circuits Your name: Other team members:

PHY 101 Lab 7 on Electric circuits: Direct current circuits Your name: Other team members: PHY 101 Lab 7 on Electric circuits: Direct current circuits Your name: Other team members: Goals: To explore the basic principles of electric circuits, and how to measure them. Materials: Electrical resistors

More information

Kirchhoff s Voltage Law and RC Circuits

Kirchhoff s Voltage Law and RC Circuits Kirchhoff s oltage Law and RC Circuits Apparatus 2 1.5 batteries 2 battery holders DC Power Supply 1 multimeter 1 capacitance meter 2 voltage probes 1 long bulb and 1 round bulb 2 sockets 1 set of alligator

More information

Name: Lab Partner: Section:

Name: Lab Partner: Section: Chapter 6 Capacitors and RC Circuits Name: Lab Partner: Section: 6.1 Purpose The purpose of this experiment is to investigate the physics of capacitors in circuits. The charging and discharging of a capacitor

More information

Experiment 9 ~ RC Circuits

Experiment 9 ~ RC Circuits Experiment 9 ~ RC Circuits Objective: This experiment will introduce you to the properties of circuits that contain both resistors AND capacitors. Equipment: 18 volt power supply, two capacitors (8 µf

More information

Storing And Releasing Charge In A Circuit

Storing And Releasing Charge In A Circuit Storing And Releasing Charge In A Circuit Topic The characteristics of capacitors Introduction A capacitor is a device that can retain and release an electric charge, and is used in many circuits. There

More information

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

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

More information

Capacitance. Apparatus: RC (Resistor-Capacitor) circuit box, voltmeter, power supply, cables

Capacitance. Apparatus: RC (Resistor-Capacitor) circuit box, voltmeter, power supply, cables apacitance Objective: To observe the behavior of a capacitor charging and discharging through a resistor; to determine the effective capacitance when capacitors are connected in series or parallel. Apparatus:

More information

Discharge of a Capacitor

Discharge of a Capacitor Discharge of a Capacitor THEORY The charge Q on a capacitor s plate is proportional to the potential difference V across the capacitor. We express this with Q = C V (1) where C is a proportionality constant

More information

Capacitors. Goal: To study the behavior of capacitors in different types of circuits.

Capacitors. Goal: To study the behavior of capacitors in different types of circuits. Capacitors Goal: To study the behavior of capacitors in different types of circuits. Lab Preparation A capacitor stores electric charge. A simple configuration for a capacitor is two parallel metal plates.

More information

Capacitors. We charge a capacitor by connecting the two plates to a potential difference, such as a battery:

Capacitors. We charge a capacitor by connecting the two plates to a potential difference, such as a battery: RC Circuits PHYS 1112L Capacitors A capacitor is an electrical component that stores charge. The simplest capacitor is just two charged metal plates separated by a non-conducting material: In the diagram

More information

Electricity & Electronics 8: Capacitors in Circuits

Electricity & Electronics 8: Capacitors in Circuits Electricity & Electronics 8: Capacitors in Circuits Capacitors in Circuits IM This unit considers, in more detail, the charging and discharging of capacitors. It then investigates how capacitors behave

More information

PHYSICS LAB. Capacitor. Date: GRADE: PHYSICS DEPARTMENT JAMES MADISON UNIVERSITY. Revision November 2002. Capacitor 21

PHYSICS LAB. Capacitor. Date: GRADE: PHYSICS DEPARTMENT JAMES MADISON UNIVERSITY. Revision November 2002. Capacitor 21 PHYSICS LAB Capacitor Printed Names: Signatures: Date: Lab Section: Instructor: GRADE: PHYSICS DEPARTMENT JAMES MADISON UNIVERSITY Revision November 2002 Capacitor 21 Blank page Capacitor 22 CHARGING AND

More information

OCR (A) specifications: 5.4.7a,b,c,d,e,f,g,h. Chapter 7 Capacitors

OCR (A) specifications: 5.4.7a,b,c,d,e,f,g,h. Chapter 7 Capacitors OCR (A) specifications: 5.4.7a,b,c,d,e,f,g,h Chapter 7 Capacitors Worksheet Worked examples Practical : Determining the capacitance of a parallel-plate capacitor Practical 2: Determining the capacitance

More information

Students will need about 30 minutes to complete these constructed response tasks.

Students will need about 30 minutes to complete these constructed response tasks. Electric Title of Circuits Concept Constructed Response Teacher Guide Students will need about 30 minutes to complete these constructed response tasks. Objectives assessed: Understand the functions of

More information

1) 10. V 2) 20. V 3) 110 V 4) 220 V

1) 10. V 2) 20. V 3) 110 V 4) 220 V 1. The diagram below represents an electric circuit consisting of a 12-volt battery, a 3.0-ohm resistor, R 1, and a variable resistor, R 2. 3. What is the total resistance of the circuit 1) 6.6 Ω 2) 10

More information

R A _ + Figure 2: DC circuit to verify Ohm s Law. R is the resistor, A is the Ammeter, and V is the Voltmeter. A R _ +

R A _ + Figure 2: DC circuit to verify Ohm s Law. R is the resistor, A is the Ammeter, and V is the Voltmeter. A R _ + Physics 221 Experiment 3: Simple DC Circuits and Resistors October 1, 2008 ntroduction n this experiment, we will investigate Ohm s Law, and study how resistors behave in various combinations. Along the

More information

EMF and Terminal Voltage Resistors in Series and Parallel Kirchhoff s Rules EMFs in Series and Parallel; Charging a Battery Circuits with Capacitors

EMF and Terminal Voltage Resistors in Series and Parallel Kirchhoff s Rules EMFs in Series and Parallel; Charging a Battery Circuits with Capacitors Chapter 19 DC Electrical Circuits Topics in Chapter 19 EMF and Terminal Voltage Resistors in Series and Parallel Kirchhoff s Rules EMFs in Series and Parallel; Charging a Battery Circuits with Capacitors

More information

Lab 5 RC Circuits. What You Need To Know: Physics 226 Lab

Lab 5 RC Circuits. What You Need To Know: Physics 226 Lab Lab 5 R ircuits What You Need To Know: The Physics In the previous two labs you ve dealt strictly with resistors. In today s lab you ll be using a new circuit element called a capacitor. A capacitor consists

More information

" = R # C. Create your sketch so that Q(t=τ) is sketched above the delineated tic mark. Your sketch. 1" e " t & (t) = Q max

 = R # C. Create your sketch so that Q(t=τ) is sketched above the delineated tic mark. Your sketch. 1 e  t & (t) = Q max Physics 241 Lab: Circuits DC Source http://bohr.physics.arizona.edu/~leone/ua/ua_spring_2010/phys241lab.html Name: Section 1: 1.1. Today you will investigate two similar circuits. The first circuit is

More information

PHYSICS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits

PHYSICS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits PHYSCS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits This experiment is designed to investigate the relationship between current and potential in simple series

More information

Dr. Julie J. Nazareth

Dr. Julie J. Nazareth Name: Dr. Julie J. Nazareth Lab Partner(s): Physics: 133L Date lab performed: Section: Capacitors Parts A & B: Measurement of capacitance single, series, and parallel combinations Table 1: Voltage and

More information

Experiment: RC Circuits

Experiment: RC Circuits Phy23: General Physics III Lab page 1 of 5 OBJETIVES Experiment: ircuits Measure the potential across a capacitor as a function of time as it discharges and as it charges. Measure the experimental time

More information

CAPACITANCE IN A RC CIRCUIT

CAPACITANCE IN A RC CIRCUIT 5/16 Capacitance-1/5 CAPACITANCE IN A RC CIRCUIT PURPOSE: To observe the behavior of resistor-capacitor circuit, to measure the RC time constant and to understand how it is related to the time dependence

More information

Tutorial 12 Solutions

Tutorial 12 Solutions PHYS000 Tutorial 2 solutions Tutorial 2 Solutions. Two resistors, of 00 Ω and 200 Ω, are connected in series to a 6.0 V DC power supply. (a) Draw a circuit diagram. 6 V 00 Ω 200 Ω (b) What is the total

More information

Charge and Discharge of a Capacitor

Charge and Discharge of a Capacitor Charge and Discharge of a Capacitor INTRODUCTION Capacitors 1 are devices that can store electric charge and energy. Capacitors have several uses, such as filters in DC power supplies and as energy storage

More information

The RC Circuit. Pre-lab questions. Introduction. The RC Circuit

The RC Circuit. Pre-lab questions. Introduction. The RC Circuit The RC Circuit Pre-lab questions 1. What is the meaning of the time constant, RC? 2. Show that RC has units of time. 3. Why isn t the time constant defined to be the time it takes the capacitor to become

More information

Circuits. Page The diagram below represents a series circuit containing three resistors.

Circuits. Page The diagram below represents a series circuit containing three resistors. Name: Circuits Date: 1. Which circuit segment has an equivalent resistance of 6 ohms? 4. The diagram below represents a series circuit containing three resistors. 2. Base your answer to the following question

More information

Capacitors. Evaluation copy

Capacitors. Evaluation copy Capacitors Computer 24 The charge q on a capacitor s plate is proportional to the potential difference V across the capacitor. We express this relationship with q V =, C where C is a proportionality constant

More information

Experiment 8 RC Circuits

Experiment 8 RC Circuits Experiment 8 ircuits Nature, to be commanded, must be obeyed. F. Bacon (1561-1626) OBJETIVE To study a simple circuit that has time-dependent voltages and current. THEOY ircuits with steady currents and

More information

AP* Electric Circuits Free Response Questions

AP* Electric Circuits Free Response Questions AP* Electric Circuits Free Response Questions 1996 Q4 (15 points) A student is provided with a 12.0-V battery of negligible internal resistance and four resistors with the following resistances: 100 Ω,

More information

PHYS 2426 Engineering Physics II EXPERIMENT 5 CAPACITOR CHARGING AND DISCHARGING

PHYS 2426 Engineering Physics II EXPERIMENT 5 CAPACITOR CHARGING AND DISCHARGING PHYS 2426 Engineering Physics II EXPERIMENT 5 CAPACITOR CHARGING AND DISCHARGING I. OBJECTIVE: The objective of this experiment is the study of charging and discharging of a capacitor by measuring the

More information

= V peak 2 = 0.707V peak

= V peak 2 = 0.707V peak BASIC ELECTRONICS - RECTIFICATION AND FILTERING PURPOSE Suppose that you wanted to build a simple DC electronic power supply, which operated off of an AC input (e.g., something you might plug into a standard

More information

Name: Partner: Date: RC Circuit Analysis Lab Experiment t RC

Name: Partner: Date: RC Circuit Analysis Lab Experiment t RC Name: Partner: Date: RC Circuit Analysis Lab Experiment t RC VC () t = VS + ( VC, initial VS ) e ε A 0 q C = C = τ = ReqC d V 1. Solve the V C (t) equation above for t. 2. Solve the V C (t) equation above

More information

Ohm s Law & Series Circuit

Ohm s Law & Series Circuit Open the TI-Nspire document Ohms_Law_&_Series_Circuit.tns. We all use and rely on electric circuits every day by flipping a switch, turning up the volume, or operating a computer or calculator. Even the

More information

Capacitors & RC Circuits

Capacitors & RC Circuits Capacitors & C Circuits Name: EQUIPMENT NEEDED: Circuits Experiment Board One D-cell Battery Wire leads Multimeter Capacitors(100 F, 330 F) esistors(1k, 4.7k ) Logger Pro Software, ULI Purpose The purpose

More information

How Does it Flow? Electricity, Circuits, and Motors

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

More information

Inductors in AC Circuits

Inductors in AC Circuits Inductors in AC Circuits Name Section Resistors, inductors, and capacitors all have the effect of modifying the size of the current in an AC circuit and the time at which the current reaches its maximum

More information

Chapter 21 Electric Current and Direct-Current Circuit

Chapter 21 Electric Current and Direct-Current Circuit Chapter 2 Electric Current and Direct-Current Circuit Outline 2- Electric Current 2-2 Resistance and Ohm s Law 2-3 Energy and Power in Electric Circuit 2-4 Resistance in Series and Parallel 2-5 Kirchhoff

More information

PHYS-2212 LAB Ohm s Law and Measurement of Resistance

PHYS-2212 LAB Ohm s Law and Measurement of Resistance Objectives PHYS-2212 LAB Ohm s Law and Measurement of Resistance Part I: Comparing the relationship between electric current and potential difference (voltage) across an ohmic resistor with the voltage-current

More information

THE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT

THE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT THE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT YOUR NAME LAB MEETING TIME Reference: C.W. Alexander and M.N.O Sadiku, Fundamentals

More information

Resistance and Ohm s Law - MBL

Resistance and Ohm s Law - MBL Resistance and Ohm s Law - MBL In this experiment you will investigate different aspects of Ohm s Law, which relates voltage, current, and resistance. A computer will be used to collect, display, and help

More information

Circuits-Circuit Analysis

Circuits-Circuit Analysis Base your answers to questions 1 through 3 on the information and diagram below. 4. A 9-volt battery is connected to a 4-ohm resistor and a 5-ohm resistor as shown in the diagram below. A 3.0-ohm resistor,

More information

3 DC Circuits, Ohm's Law and Multimeters

3 DC Circuits, Ohm's Law and Multimeters 3 DC Circuits, Ohm's Law and Multimeters Theory: Today's lab will look at some basics of electricity and how these relate to simple circuit diagrams. Three basic terms are important to a study of electricity.

More information

Lab #4 Capacitors and Inductors. Capacitor and Inductor Transient Response

Lab #4 Capacitors and Inductors. Capacitor and Inductor Transient Response Capacitor and Inductor Transient Response Capacitor Theory Like resistors, capacitors are also basic circuit elements. Capacitors come in a seemingly endless variety of shapes and sizes, and they can all

More information

Series and Parallel Resistive Circuits Physics Lab VIII

Series and Parallel Resistive Circuits Physics Lab VIII Series and Parallel Resistive Circuits Physics Lab VIII Objective In the set of experiments, the theoretical expressions used to calculate the total resistance in a combination of resistors will be tested

More information

Capacitors. V=!f_. Figure 1

Capacitors. V=!f_. Figure 1 Computer Capacitors 24 The charge q on a capacitor's plate is proportional to the potential difference V across the capacitor. We express this relationship with V=!f_ c where C is a proportionality constant

More information

RC Circuits and The Oscilloscope Physics Lab X

RC Circuits and The Oscilloscope Physics Lab X Objective RC Circuits and The Oscilloscope Physics Lab X In this series of experiments, the time constant of an RC circuit will be measured experimentally and compared with the theoretical expression for

More information

E X P E R I M E N T 7

E X P E R I M E N T 7 E X P E R I M E N T 7 The RC Circuit Produced by the Physics Staff at Collin College Copyright Collin College Physics Department. All Rights Reserved. University Physics II, Exp 7: The RC Circuit Page

More information

3_given a graph of current_voltage for a resistor, determine the resistance. Three resistance R1 = 1.0 kω, R2 = 1.5 kω, R3 = 2.

3_given a graph of current_voltage for a resistor, determine the resistance. Three resistance R1 = 1.0 kω, R2 = 1.5 kω, R3 = 2. Ohm s Law Objectives: 1_measure the current_voltage curve for a resistor 2_construct a graph of the data from objective 1 3_given a graph of current_voltage for a resistor, determine the resistance Equipment:

More information

Resistance, Ohm s Law, and the Temperature of a Light Bulb Filament

Resistance, Ohm s Law, and the Temperature of a Light Bulb Filament Resistance, Ohm s Law, and the Temperature of a Light Bulb Filament Name Partner Date Introduction Carbon resistors are the kind typically used in wiring circuits. They are made from a small cylinder of

More information

Meters - Ohm s Law R 2 R 1 APPARATUS INTRODUCTION R 1 R 2 A

Meters - Ohm s Law R 2 R 1 APPARATUS INTRODUCTION R 1 R 2 A Meters - Ohm s Law APPARATUS 1. Board on which two wires are mounted, each 1 m long, equipped with a sliding contact 2. Rheostat (variable resistance), 0... 7 Ω 3. DC ammeter (full scale: 2 A) 4. Voltmeter

More information

= 1 R 1 + (2) + 1 R R 2

= 1 R 1 + (2) + 1 R R 2 PHYS 140 General Physics II EXPERIMENT 4 SERIES AND PARALLEL RESISTANCE CIRCUITS I. OBJECTIVE: The objective of this experiment is the study of series and parallel resistive circuits. The student will

More information

Preview of Period 12: Electric Circuits

Preview of Period 12: Electric Circuits Preview of Period 2: Electric Circuits 2. Voltage, Current, and esistance How are voltage, current, and resistance related? 2.2 esistance and Voltage of esistors in Connected in Series How does current

More information

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

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

More information

Lab E1: Introduction to Circuits

Lab E1: Introduction to Circuits E1.1 Lab E1: Introduction to Circuits The purpose of the this lab is to introduce you to some basic instrumentation used in electrical circuits. You will learn to use a DC power supply, a digital multimeter

More information

Pre-Lab 7 Assignment: Capacitors and RC Circuits

Pre-Lab 7 Assignment: Capacitors and RC Circuits Name: Lab Partners: Date: Pre-Lab 7 Assignment: Capacitors and RC Circuits (Due at the beginning of lab) Directions: Read over the Lab Handout and then answer the following questions about the procedures.

More information

Measuring Electric Phenomena: the Ammeter and Voltmeter

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

More information

Lecture PowerPoints. Chapter 19 Physics: Principles with Applications, 7th edition Giancoli

Lecture PowerPoints. Chapter 19 Physics: Principles with Applications, 7th edition Giancoli Lecture PowerPoints Chapter 19 Physics: Principles with Applications, 7th edition Giancoli This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching

More information

Experiment: Series and Parallel Circuits

Experiment: Series and Parallel Circuits Phy203: General Physics Lab page 1 of 6 Experiment: Series and Parallel Circuits OBJECTVES MATERALS To study current flow and voltages in series and parallel circuits. To use Ohm s law to calculate equivalent

More information

Circuits and Resistivity

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

More information

Q1. (a) Complete the sentence below to name the instrument used to measure electrical current.

Q1. (a) Complete the sentence below to name the instrument used to measure electrical current. Q. (a) Complete the sentence below to name the instrument used to measure electrical current. The instrument used to measure electrical current is called... () (b) In the diagram below each box contains

More information

PHYS245 Lab: Resistors in parallel and resistors in series

PHYS245 Lab: Resistors in parallel and resistors in series PHYS245 Lab: esistors in parallel and resistors in series Purpose Understand parallel and series circuits Use DMM as Ammeter or Voltmeter in d.c. circuits Understand combination rules. Equipment list:

More information

Discharging and Charging a Capacitor

Discharging and Charging a Capacitor Name: Partner(s): Desk #: Date: Discharging and Charging a Capacitor Figure 1. Various types of capacitors. "Capacitors (7189597135)" by Eric Schrader from San Francisco, CA, United States - 12739s. Licensed

More information

1: (ta initials) 2: first name (print) last name (print) brock id (ab13cd) (lab date)

1: (ta initials) 2: first name (print) last name (print) brock id (ab13cd) (lab date) 1: (ta initials) 2: first name (print) last name (print) brock id (ab13cd) (lab date) Experiment 1 Capacitance In this Experiment you will learn the relationship between the voltage and charge stored on

More information

Resistors in Series and Parallel

Resistors in Series and Parallel Resistors in Series and Parallel INTRODUCTION Direct current (DC) circuits are characterized by the quantities current, voltage and resistance. Current is the rate of flow of charge. The SI unit is the

More information

PHYS245 Lab: Light bulb and resistor ΙΙ: Current voltage (I-V) curves

PHYS245 Lab: Light bulb and resistor ΙΙ: Current voltage (I-V) curves Purpose: PHYS245 Lab: Light bulb and resistor ΙΙ: Current voltage (I-V) curves Measure the current voltage curve of a light bulb and a resistor using a variable d.c. power supply. Understanding of Ohm

More information

College Physics II Lab 8: RC Circuits

College Physics II Lab 8: RC Circuits INTODUTION ollege Physics II Lab 8: ircuits Peter olnick with Taner Edis Spring 2015 Introduction onsider the circuit shown. (onsult section 23.7 in your textbook.) If left for long enough, the charge

More information

Electrical Measurements

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

More information

LAB ELEC3.COMP From Physics with Computers, Vernier Software and Technology, 2003

LAB ELEC3.COMP From Physics with Computers, Vernier Software and Technology, 2003 APAITORS LAB ELE3.OMP From Physics with omputers, Vernier Software and Technology, 2003 INTRODUTION The charge q on a capacitor s plate is proportional to the potential difference V across the capacitor.

More information

The R-C series circuit

The R-C series circuit School of Engineering Department of Electrical and Computer Engineering 332:224 Principles of Electrical Engineering II Laboratory Experiment 4 The C series circuit 1 Introduction Objectives To study the

More information

Goals. Introduction R = DV I (7.1)

Goals. Introduction R = DV I (7.1) Lab 7. Ohm s Law Goals To understand Ohm s law, used to describe the behavior of electrical conduction in many materials and circuits. To calculate the electrical power dissipated as heat in electrical

More information

R Ω. II. Experimental Procedure. Ohm's Law

R Ω. II. Experimental Procedure. Ohm's Law I. Theory Ohm's Law In this lab we will make detailed measurements on a resistor to see if it obeys Ohm's law. We will also check the rules for combining resistors in series and parallel. Ohm's law describes

More information

Capacitance, Resistance, DC Circuits

Capacitance, Resistance, DC Circuits This test covers capacitance, electrical current, resistance, emf, electrical power, Ohm s Law, Kirchhoff s Rules, and RC Circuits, with some problems requiring a knowledge of basic calculus. Part I. Multiple

More information

Resistors in Series and Parallel Circuits

Resistors in Series and Parallel Circuits 69 Resistors in Series and Parallel Circuits E&M: Series and parallel circuits Equipment List DataStudio file: Not Required Qty s Part Numbers 1 C/DC Electronics Lab EM-8656 2 D cell 1.5 volt Introduction

More information

CHAPTER 28 ELECTRIC CIRCUITS

CHAPTER 28 ELECTRIC CIRCUITS CHAPTER 8 ELECTRIC CIRCUITS 1. Sketch a circuit diagram for a circuit that includes a resistor R 1 connected to the positive terminal of a battery, a pair of parallel resistors R and R connected to the

More information

Series & Parallel Circuits Challenge

Series & Parallel Circuits Challenge Name: Part One: Series & Parallel Circuits Challenge 1. Build a circuit using two batteries and two light bulbs in a way to illuminate the two light bulbs so that if either light bulb is disconnected,

More information

RC Circuit (Power amplifier, Voltage Sensor)

RC Circuit (Power amplifier, Voltage Sensor) Object: RC Circuit (Power amplifier, Voltage Sensor) To investigate how the voltage across a capacitor varies as it charges and to find its capacitive time constant. Apparatus: Science Workshop, Power

More information

Filters and Waveform Shaping

Filters and Waveform Shaping Physics 333 Experiment #3 Fall 211 Filters and Waveform Shaping Purpose The aim of this experiment is to study the frequency filtering properties of passive (R, C, and L) circuits for sine waves, and the

More information

Series,"Parallel," and"series." Parallel"Circuits"

Series,Parallel, andseries. ParallelCircuits chapter 25 Series,"Parallel," and"series." Parallel"Circuits" FIGURE 25.1 A series circuit with three bulbs. All current flows through all resistances (bulbs). The total resistance of the circuit is the

More information

P150A Experimental Lab #7 Ohm s Law (Ver A 10/12)

P150A Experimental Lab #7 Ohm s Law (Ver A 10/12) Ohm s Law The fundamental relationship among the three important electrical quantities current, voltage, and resistance was discovered by Georg Simon Ohm. The relationship and the unit of electrical resistance

More information

Ohm s Law and Simple DC Circuits

Ohm s Law and Simple DC Circuits Ohm s Law and Simple DC Circuits 2EM Object: Apparatus: To confirm Ohm s Law, to determine the resistance of a resistor, and to study currents, potential differences, and resistances in simple direct current

More information

A) The potential difference across the 6-ohm B) 2.0 A resistor is the same as the potential difference across the 3-ohm resistor. D) 4.

A) The potential difference across the 6-ohm B) 2.0 A resistor is the same as the potential difference across the 3-ohm resistor. D) 4. 1. A 2.0-ohm resistor and a 4.0-ohm resistor are connected in series with a 12-volt battery. If the current through the 2.0-ohm resistor is 2.0 amperes, the current through the 4.0-ohm resistor is A) 1.0

More information

Name Partner Date Class

Name Partner Date Class Name Partner Date Class Ohm's Law Equipment: Resistors, multi-meters, VOM, alligator clips, wires, breadboard, batteries, 1/4 or 1/2 Amp fuse, low voltage power supply. Object: The object of this exercise

More information

Experiment 6 Parallel Circuits

Experiment 6 Parallel Circuits Experiment 6 Parallel Circuits EL 111 - DC Fundamentals By: Walter Banzhaf, E.K. Smith, and Winfield Young University of Hartford Ward College of Technology Objectives: 1. For the student to investigate

More information

EXPERIMENT 7 OHM S LAW, RESISTORS IN SERIES AND PARALLEL

EXPERIMENT 7 OHM S LAW, RESISTORS IN SERIES AND PARALLEL 260 7- I. THEOY EXPEIMENT 7 OHM S LAW, ESISTOS IN SEIES AND PAALLEL The purposes of this experiment are to test Ohm's Law, to study resistors in series and parallel, and to learn the correct use of ammeters

More information

RC Circuits. The purpose of this lab is to understand how capacitors charge and discharge.

RC Circuits. The purpose of this lab is to understand how capacitors charge and discharge. Department of Physics and Geology Purpose Circuits Physics 2402 The purpose of this lab is to understand how capacitors charge and discharge. Materials Decade Resistance Box (CENCO), 0.1 µf, 0.5µF, and

More information

Physics 9 Fall 2009 Homework 6 - Solutions

Physics 9 Fall 2009 Homework 6 - Solutions . Chapter 32 - Exercise 8. Physics 9 Fall 29 Homework 6 - s How much power is dissipated by each resistor in the figure? First, let s figure out the current in the circuit. Since the two resistors are

More information

EXPERIMENT 6 CHARGE SHARING BY CAPACITORS

EXPERIMENT 6 CHARGE SHARING BY CAPACITORS 60 6- I. THEORY EXPERIMENT 6 HARGE SHARING BY APAITORS The purpose of this experiment is to test the theoretical equations governing charge sharing by capacitors and to measure the capacitance of an "unknown"

More information

Lab 6 Transistor Amplifiers

Lab 6 Transistor Amplifiers ECET 242 Electronic Circuits Lab 6 Transistor Amplifiers Page 1 of 5 Name: Objective: Lab Report: Equipment: Students successfully completing this lab exercise will accomplish the following objectives:

More information

First Order Circuits. EENG223 Circuit Theory I

First Order Circuits. EENG223 Circuit Theory I First Order Circuits EENG223 Circuit Theory I First Order Circuits A first-order circuit can only contain one energy storage element (a capacitor or an inductor). The circuit will also contain resistance.

More information

1. Purpose Experimental verification of an exponential dependency between two physical quantities. Perform numerical evaluations.

1. Purpose Experimental verification of an exponential dependency between two physical quantities. Perform numerical evaluations. Experimental Science P9: Capacitor charge and discharge 1. Purpose Experimental verification of an exponential dependency between two physical quantities. Perform numerical evaluations. 2. Introduction

More information

1 of 8 3/30/2010 2:18 PM

1 of 8 3/30/2010 2:18 PM 1 of 8 3/30/2010 2:18 PM Chapter 32 Homework Due: 8:00am on Tuesday, March 30, 2010 Note: To understand how points are awarded, read your instructor's Grading Policy. [Return to Standard Assignment View]

More information

Basic DC Circuits. Electrical Quantity Description Unit Water Analogy Voltage or Potential Difference

Basic DC Circuits. Electrical Quantity Description Unit Water Analogy Voltage or Potential Difference Basic DC Circuits Current and voltage can be difficult to understand, because the flow of electrons and potential differences cannot be observed by the unaided human eye. To clarify these terms, some people

More information

PHY222 Lab 3 Ohm s Law and Electric Circuits Ohm s Law; Series Resistors; Circuits Inside Three- and Four-Terminal Black Boxes

PHY222 Lab 3 Ohm s Law and Electric Circuits Ohm s Law; Series Resistors; Circuits Inside Three- and Four-Terminal Black Boxes PHY222 Lab 3 Ohm s Law and Electric Circuits Ohm s Law; Series Resistors; Circuits Inside Three- and Four-Terminal Black Boxes Print Your Name Print Your Partners' Names Instructions February 5, 2015 Before

More information

Lab 5: Basic Direct-Current Circuits Edited 11/20/14 by Joe Skitka, Stephen Albright, WL, JCH & DGH

Lab 5: Basic Direct-Current Circuits Edited 11/20/14 by Joe Skitka, Stephen Albright, WL, JCH & DGH Lab 5: Basic Direct-Current Circuits Edited 11/20/14 by Joe Skitka, Stephen Albright, WL, JCH & DGH Objective This set of mini-experiments aims to verify rules governing the addition of resistors and capacitors

More information

Lab 5 RC Circuits: Charge Changing in Time Observing the way capacitors in RC circuits charge and discharge.

Lab 5 RC Circuits: Charge Changing in Time Observing the way capacitors in RC circuits charge and discharge. Print Your Name Lab 5 RC Circuits: Charge Changing in Time Observing the way capacitors in RC circuits charge and discharge. Print Your Partners' Names Instructions October 15, 2015October 13, 2015 Read

More information

21 Lab 5: Series and Parallel Circuits

21 Lab 5: Series and Parallel Circuits 21 Lab 5: Series and Parallel Circuits Components in an electrical circuit are in series when they are connected one after the other, so that the same current flows through both of them. Components are

More information

UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE. Department of Electrical and Computer Engineering

UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE. Department of Electrical and Computer Engineering UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering Experiment No. 6 Precision Resistance Measurements Introduction: It is sometimes necessary to make resistance

More information