# Experiment 3: Magnetic Fields of a Bar Magnet and Helmholtz Coil

Size: px
Start display at page:

Download "Experiment 3: Magnetic Fields of a Bar Magnet and Helmholtz Coil"

Transcription

1 MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2009 Experiment 3: Magnetic Fields of a Bar Magnet and Helmholtz Coil OBJECTIVES 1. To learn how to visualize magnetic field lines using compasses and a gauss meter 2. To examine the field lines from bar magnets and see how they add 3. To examine the field lines from a Helmholtz coil and understand the difference between using it in Helmholtz and anti-helmholtz configurations. INTRODUCTION PRE-LAB READING In this lab we will measure magnetic field lines using two methods. First, we will use small compasses that show the direction, but not magnitude, of the local magnetic field. Next we will use a gauss meter, which measures the magnitude of the magnetic field along a single, specific axis and thus does not allow as easy a visualization of the magnetic field direction. We will measure fields both from bar magnets and from a Helmholtz coil. APPARATUS 1. Mini-Compass You will receive a bag of mini-compasses (Fig. 1a) that indicate the magnetic field direction by aligning with it, with the painted end of the compass needle pointing away from magnetic north (i.e. pointing in the direction of the magnetic field). Conveniently, the magnetic south pole of the Earth is very close to its geographic north pole, so compasses tend to point North (Fig. 1b). Note that these compasses are cheap (though not necessarily inexpensive) and sometimes either point in the direction opposite the way they should, or get completely stuck. Check them out before using them. (a) (b) Figure 1 (a) A mini-compass like the ones we will be using in this lab. (b) The painted end of the compass points north because it points towards magnetic south. E03-1

2 2. Science Workshop 750 Interface As always, we will use the Science Workshop 750 interface, this time for recording the magnetic field magnitude as measured by the magnetic field sensor (gauss meter). 3. Magnetic Field Sensor The magnetic field sensor measures the strength of the magnetic field pointing into one of two white dots painted at its measurement end (far left in Fig. 2). Selecting radial mode records the strength of the field pointing into the dot on the side of the device, while axial records the strength of the field pointing into the dot on the end. There is also a tare button which sets the current field strength to zero (i.e. measures relative to it). Figure 2 Magnetic field sensor, showing (from right to left) the range select switch, the tare button, and the radial/axial switch, which is set to radial. 4. Helmholtz Coil Consider the Helmholtz Coil Apparatus shown in Fig. 3. It consists of two coaxial coils separated by a distance equal to their common radii. The coil can be operated in 3 modes. In the first, connections are made only to one set of banana plugs, pushing current through only one of the coils. In the second, a connection is made between the black plug from one coil to the red plug from the other. This sends current the same direction through both coils and is called Helmholtz Mode. In the final configuration Anti-Helmholtz Mode a connection is made between the two black plugs, sending current in the opposite direction through the two coils. Figure 3 Helmholtz Coil Apparatus E03-2

3 4. Power Supply Because the Helmholtz coils require a fairly large current in order to create a measurable field, we are unable to use the output of the 750 to drive them. For this reason, we will use an EZ dc power supply (Fig. 4). This supply limits both the voltage and the current, putting out the largest voltage possible consistent with both settings. That is, if the output is open (no leads connected, so no current) then the voltage output is completely determined by the voltage setting. On the other hand, if the output is shorted (a wire is placed between the two output plugs) then the voltage is completely determined by the current setting (V = IR short ). Figure 4 Power Supply for Helmholtz Coil The power supply allows independent control of current (left knob) and voltage (right knob) with whichever limits the output the most in control. The green light next to the CV in this picture means that we are in constant voltage mode the voltage setting is limiting the output (which makes sense since the output at the bottom right is not hooked up so there is currently no current flow). GENERALIZED PROCEDURE This lab consists of three main parts. In each you will measure the magnetic field generated either by bar magnets or by current carrying coils. Part 1: Mapping Magnetic Field Lines Using Mini-Compasses Using a compass you will follow a series of field lines originating near the north pole of a bar magnet. Part 2: Constructing a Magnetic Field Diagram A pair of bar magnets are placed so that either their opposite poles or same poles are facing each other and you will map out the field lines from these configurations. Part 3: Helmholtz Coil In this part you will use the magnetic field sensor to measure the amplitude of the magnetic field generated from three different geometries of current carrying wire loops. END OF PRE-LAB READING E03-3

4

5 IN-LAB ACTIVITIES EXPERIMENTAL SETUP 1. Download the LabView file and start up the program. 2. Connect the Magnetic Field Sensor to Analog Channel A on the 750 Interface 3. Without leads connected to the power supply, turn it on and set the voltage output to 2 V. Turn it off. NOTE: When working with bar magnets, please do NOT force a north pole to touch a north pole (or force south poles to touch), as this will demagnetize the magnets. MEASUREMENTS Part 1: Mapping Magnetic Field Lines Using Mini-Compasses 1. Tape a piece of brown paper (provided) onto your table. 2. Place a bar magnet about 3 inches from the far side of the paper, as shown below. Trace the outline of the magnet on the paper. 3 inches, more or less Table edge 3. Place a compass near one end of the magnet. Make two dots on the paper, one at the end of the compass needle next to the magnet and the second at the other end of the compass needle. Now move the compass so that the end of the needle that was next to the magnet is directly over the second dot, and make a new dot at the other end of the needle. Continue this process until the compass comes back to the magnet or leaves the edge of the paper. Draw a line through the dots and indicate with an arrowhead the direction in which the North end of the needle pointed, as shown below E03-5

6 4. Repeat the process described above several more times (~4 field lines), starting at different locations on the magnet. Work fairly quickly it is more important to get a feeling for the shape of the field lines than to map them precisely. Question 1: Mostly your field lines come back to the bar magnet, but some of them wander off and never come back to the bar magnet. Which part of your bar magnet do the ones that wander off never to return come from? Where are they going? Part 2: Constructing a Magnetic Field Diagram 2A: Parallel Magnets 1. Arrange two bar magnets and a series of compasses as pictured here: 2. Sketch the compass needles directions in the diagram. Based on these compass directions, sketch in some field lines. Question 2: Is there any place in this region where the magnetic field is zero? If so, where? How can you tell? E03-6

7 Question 3: Where is the magnetic field the strongest in this situation? How can you determine this from the field lines? 2B: Anti-Parallel Magnets 1. Arrange two bar magnets and a series of compasses as pictured here: 2. Sketch the compass needles directions in the diagram. Based on these compass directions, sketch in some field lines. Question 4: Is there any place in this region where the magnetic field is zero? If so, where? How can you tell? E03-7

8 Part 3: Helmholtz Coil In this part we are going to measure the z-component of the field along the z-axis (central axis of the coils) 3A: Using a Single Coil 1. With the power supply off, connect the red lead from the power supply to the red plug of the top coil, and the black lead to the black plug of the top coil. Turn the current knob fully counter-clockwise (i.e. turn off the current) then turn on the power supply and slowly turn the current up to ~ 0.8 A. 2. Put the magnetic field sensor in axial mode, set its gain to 10x and place it along the central axis of the Helmholtz coil, pushing into the indentation at the center of the holder. Tare it to set the reading to zero. 3. Start recording magnetic field (press Go) and raise the magnetic field sensor smoothly along the z-axis until you are above the top coil. Try raising at different rates to convince yourself that this only changes the time axis, and not the measured magnitude of the field. 4. Sketch the results for field strength vs. position Up Bottom Coil Top Coil B Field 0 Down Distance Along the Vertical (Z) Axis Up Question 5: Where along the axis is the field from the single coil the strongest? What is its magnitude at this location? How does this compare to the value you calculated in the problem set? E03-8

9 3B: Helmholtz Configuration 1. Move the black lead to the black terminal of the lower coil, and connect a lead from the black terminal of the upper to the red terminal of the lower, sending current in the same direction through both coils. Set the current to ~ 0.5 A 2. Follow the procedure in 3A to again measure field strength along the z-axis, plotting on the below figure. Up Bottom Coil Top Coil B Field 0 Down Distance Along the Vertical (Z) Axis Up Question 6: Where along the axis is the field from the strongest? What is its magnitude at this location? How does this compare to your problem set prediction? Aside from the location and strength of the maximum, is there a qualitative difference between the single coil and the Helmholtz coil field profile? If so, what is the difference? 3C: Anti-Helmholtz Configuration 1. Swap the leads to the lower coil, keeping the current at ~ 0.5 A, although now running in opposite directions in the top and bottom coil. 2. Follow the procedure in 3A to again measure field strength along the z-axis. E03-9

10 Up Bottom Coil Top Coil B Field 0 Down Distance Along the Vertical (Z) Axis Question 7: What are two main differences between the field profile in Anti-Helmholtz configuration and in Helmholtz configuration? Does the maximum field strength match your prediction from the problem set? Up Further Questions (for experiment, thought, future exam questions ) What does the field profile look like if we place two bar magnets next to each other rather than collinear with each other (either parallel or anti-parallel to each other). What does the radial field profile (e.g. the x component of the field) look like along the z-axis of the Helmholtz coil? What do the radial and axial field profiles look like moving across the top of the Helmholtz coil rather than down its central axis? It looks as though there is a local maximum of magnetic field strength at some point on the axis for both the single coil and Helmholtz coil configurations (at least looking at them along the z-axis only). If we consider them three dimensionally are they still local maxima? That is, if we move off axis does the magnitude of the field also decrease as we move away from these maxima points? E03-10

### Experiment 3: Magnetic Fields of a Bar Magnet and Helmholtz Coil

MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2006 Experiment 3: Magnetic Fields of a Bar Magnet and Helmholtz Coil OBJECTIVES 1. To learn how to visualize magnetic field lines

### Experiment 5: Magnetic Fields of a Bar Magnet and of the Earth

MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2005 Experiment 5: Magnetic Fields of a Bar Magnet and of the Earth OBJECTIVES 1. To examine the magnetic field associated with a

### Experiment 7: Forces and Torques on Magnetic Dipoles

MASSACHUSETTS INSTITUTE OF TECHNOLOY Department of Physics 8. Spring 5 OBJECTIVES Experiment 7: Forces and Torques on Magnetic Dipoles 1. To measure the magnetic fields due to a pair of current-carrying

### The purposes of this experiment are to test Faraday's Law qualitatively and to test Lenz's Law.

260 17-1 I. THEORY EXPERIMENT 17 QUALITATIVE STUDY OF INDUCED EMF Along the extended central axis of a bar magnet, the magnetic field vector B r, on the side nearer the North pole, points away from this

### Physics 221 Experiment 5: Magnetic Fields

Physics 221 Experiment 5: Magnetic Fields August 25, 2007 ntroduction This experiment will examine the properties of magnetic fields. Magnetic fields can be created in a variety of ways, and are also found

### Mapping the Magnetic Field

I Mapping the Magnetic Field Mapping the Magnetic Field Vector Fields The electric field, E, and the magnetic field, B, are two examples of what are termed vector fields, quantities which have both magnitude

### Physics 41, Winter 1998 Lab 1 - The Current Balance. Theory

Physics 41, Winter 1998 Lab 1 - The Current Balance Theory Consider a point at a perpendicular distance d from a long straight wire carrying a current I as shown in figure 1. If the wire is very long compared

### 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

### 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

### The DC Motor. Physics 1051 Laboratory #5 The DC Motor

The DC Motor Physics 1051 Laboratory #5 The DC Motor Contents Part I: Objective Part II: Introduction Magnetic Force Right Hand Rule Force on a Loop Magnetic Dipole Moment Torque Part II: Predictions Force

### Experiment 6: Magnetic Force on a Current Carrying Wire

Chapter 8 Experiment 6: Magnetic Force on a Current Carrying Wire 8.1 Introduction Maricourt (1269) is credited with some of the original work in magnetism. He identified the magnetic force centers of

### ELECTRON SPIN RESONANCE Last Revised: July 2007

QUESTION TO BE INVESTIGATED ELECTRON SPIN RESONANCE Last Revised: July 2007 How can we measure the Landé g factor for the free electron in DPPH as predicted by quantum mechanics? INTRODUCTION Electron

### E/M Experiment: Electrons in a Magnetic Field.

E/M Experiment: Electrons in a Magnetic Field. PRE-LAB You will be doing this experiment before we cover the relevant material in class. But there are only two fundamental concepts that you need to understand.

### Electromagnetic Induction Experiment

In this experiment, the activity will be based on a Phet simulation called Faraday s Electromagnetic Lab, created by a group at the University of Colorado at Boulder. This group has a number of good simulations

### Exploring Magnetism. DataQuest

Exploring Magnetism Magnetism is the force of attraction or repulsion between a magnet and something else. Magnets attract materials made of iron, nickel, or cobalt. Can you think of five things to which

### Name Partners Date. Energy Diagrams I

Name Partners Date Visual Quantum Mechanics The Next Generation Energy Diagrams I Goal Changes in energy are a good way to describe an object s motion. Here you will construct energy diagrams for a toy

### Ampere's Law. Introduction. times the current enclosed in that loop: Ampere's Law states that the line integral of B and dl over a closed path is 0

1 Ampere's Law Purpose: To investigate Ampere's Law by measuring how magnetic field varies over a closed path; to examine how magnetic field depends upon current. Apparatus: Solenoid and path integral

### Magnetic Fields and Their Effects

Name Date Time to Complete h m Partner Course/ Section / Grade Magnetic Fields and Their Effects This experiment is intended to give you some hands-on experience with the effects of, and in some cases

### Magnetic Field of a Circular Coil Lab 12

HB 11-26-07 Magnetic Field of a Circular Coil Lab 12 1 Magnetic Field of a Circular Coil Lab 12 Equipment- coil apparatus, BK Precision 2120B oscilloscope, Fluke multimeter, Wavetek FG3C function generator,

### Experiment 8: Undriven & Driven RLC Circuits

Experiment 8: Undriven & Driven RLC Circuits Answer these questions on a separate sheet of paper and turn them in before the lab 1. RLC Circuits Consider the circuit at left, consisting of an AC function

### F B = ilbsin(f), L x B because we take current i to be a positive quantity. The force FB. L and. B as shown in the Figure below.

PHYSICS 176 UNIVERSITY PHYSICS LAB II Experiment 9 Magnetic Force on a Current Carrying Wire Equipment: Supplies: Unit. Electronic balance, Power supply, Ammeter, Lab stand Current Loop PC Boards, Magnet

### GENERAL SCIENCE LABORATORY 1110L Lab Experiment 6: Ohm s Law

GENERAL SCIENCE LABORATORY 1110L Lab Experiment 6: Ohm s Law OBJECTIVES: To verify Ohm s law, the mathematical relationship among current, voltage or potential difference, and resistance, in a simple circuit.

### Electrical Resonance

Electrical Resonance (R-L-C series circuit) APPARATUS 1. R-L-C Circuit board 2. Signal generator 3. Oscilloscope Tektronix TDS1002 with two sets of leads (see Introduction to the Oscilloscope ) INTRODUCTION

### Electric Field Mapping Lab 3. Precautions

HB 09-25-07 Electric Field Mapping Lab 3 1 Electric Field Mapping Lab 3 Equipment mapping board, U-probe, resistive boards, templates, dc voltmeter (431B), 4 long leads, 16 V dc for wall strip Reading

### NUCLEAR MAGNETIC RESONANCE. Advanced Laboratory, Physics 407, University of Wisconsin Madison, Wisconsin 53706

(revised 4/21/03) NUCLEAR MAGNETIC RESONANCE Advanced Laboratory, Physics 407, University of Wisconsin Madison, Wisconsin 53706 Abstract This experiment studies the Nuclear Magnetic Resonance of protons

### 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

### ε: Voltage output of Signal Generator (also called the Source voltage or Applied

Experiment #10: LR & RC Circuits Frequency Response EQUIPMENT NEEDED Science Workshop Interface Power Amplifier (2) Voltage Sensor graph paper (optional) (3) Patch Cords Decade resistor, capacitor, and

### ELECTRIC FIELD LINES AND EQUIPOTENTIAL SURFACES

ELECTRIC FIELD LINES AND EQUIPOTENTIAL SURFACES The purpose of this lab session is to experimentally investigate the relation between electric field lines of force and equipotential surfaces in two dimensions.

### INTERFERENCE OF SOUND WAVES

2011 Interference - 1 INTERFERENCE OF SOUND WAVES The objectives of this experiment are: To measure the wavelength, frequency, and propagation speed of ultrasonic sound waves. To observe interference phenomena

### 1 One Dimensional Horizontal Motion Position vs. time Velocity vs. time

PHY132 Experiment 1 One Dimensional Horizontal Motion Position vs. time Velocity vs. time One of the most effective methods of describing motion is to plot graphs of distance, velocity, and acceleration

### 5. Measurement of a magnetic field

H 5. Measurement of a magnetic field 5.1 Introduction Magnetic fields play an important role in physics and engineering. In this experiment, three different methods are examined for the measurement of

### Motion of Charges in Combined Electric and Magnetic Fields; Measurement of the Ratio of the Electron Charge to the Electron Mass

Motion of Charges in Combined Electric and Magnetic Fields; Measurement of the Ratio of the Electron Charge to the Electron Mass Object: Understand the laws of force from electric and magnetic fields.

### DC GENERATOR THEORY. LIST the three conditions necessary to induce a voltage into a conductor.

DC Generators DC generators are widely used to produce a DC voltage. The amount of voltage produced depends on a variety of factors. EO 1.5 LIST the three conditions necessary to induce a voltage into

### 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

### LABORATORY V MAGNETIC FIELDS AND FORCES

LABORATORY V MAGNETIC FIELDS AND FORCES Magnetism plays a large part in our modern world's technology. Magnets are used today to image parts of the body, to explore the mysteries of the human brain, and

### Experiments on the Basics of Electrostatics (Coulomb s law; Capacitor)

Experiments on the Basics of Electrostatics (Coulomb s law; Capacitor) ZDENĚK ŠABATKA Department of Physics Education, Faculty of Mathematics and Physics, Charles University in Prague The physics textbooks

### MAG Magnetic Fields revised July 24, 2012

MAG Magnetic Fields revised July 24, 2012 (You will do two experiments; this one (in Rock 402) and the Magnetic Induction experiment (in Rock 403). Sections will switch rooms and experiments half-way through

### 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

### Episode 126: Capacitance and the equation C =Q/V

Episode 126: Capacitance and the equation C =Q/V Having established that there is charge on each capacitor plate, the next stage is to establish the relationship between charge and potential difference

### FREE FALL. Introduction. Reference Young and Freedman, University Physics, 12 th Edition: Chapter 2, section 2.5

Physics 161 FREE FALL Introduction This experiment is designed to study the motion of an object that is accelerated by the force of gravity. It also serves as an introduction to the data analysis capabilities

1 Electromagnetic Induction: Faraday's Law OBJECTIVE: To understand how changing magnetic fields can produce electric currents. To examine Lenz's Law and the derivative form of Faraday's Law. EQUIPMENT:

### Fundamentals of Signature Analysis

Fundamentals of Signature Analysis An In-depth Overview of Power-off Testing Using Analog Signature Analysis www.huntron.com 1 www.huntron.com 2 Table of Contents SECTION 1. INTRODUCTION... 7 PURPOSE...

### H ello, I ll be demonstrating

Magnetic Pulser MP6 How-to Video Transcription H ello, I ll be demonstrating the use of the SOTA Magnetic Pulser. The latest model is shown here, our Model MP6. Before we get started I just want to draw

### FREQUENCY RESPONSE OF AN AUDIO AMPLIFIER

2014 Amplifier - 1 FREQUENCY RESPONSE OF AN AUDIO AMPLIFIER The objectives of this experiment are: To understand the concept of HI-FI audio equipment To generate a frequency response curve for an audio

### Parallel Plate Capacitor

Parallel Plate Capacitor Capacitor Charge, Plate Separation, and Voltage A capacitor is used to store electric charge. The more voltage (electrical pressure) you apply to the capacitor, the more charge

### FORCE ON A CURRENT IN A MAGNETIC FIELD

7/16 Force current 1/8 FORCE ON A CURRENT IN A MAGNETIC FIELD PURPOSE: To study the force exerted on an electric current by a magnetic field. BACKGROUND: When an electric charge moves with a velocity v

### Maximum value. resistance. 1. Connect the Current Probe to Channel 1 and the Differential Voltage Probe to Channel 2 of the interface.

Series and Parallel Circuits Computer 23 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

### Electricity. Confirming Coulomb s law. LD Physics Leaflets P3.1.2.2. 0909-Wie. Electrostatics Coulomb s law

Electricity Electrostatics Coulomb s law LD Physics Leaflets Confirming Coulomb s law P3... Measuring with the force sensor and newton meter Objects of the experiments Measuring the force between two charged

### Interferometers. OBJECTIVES To examine the operation of several kinds of interferometers. d sin = n (1)

Interferometers The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he did not seek. Claude Bernard (1813-1878) OBJECTIVES To examine the

### 6/2016 E&M forces-1/8 ELECTRIC AND MAGNETIC FORCES. PURPOSE: To study the deflection of a beam of electrons by electric and magnetic fields.

6/016 E&M forces-1/8 ELECTRIC AND MAGNETIC FORCES PURPOSE: To study the deflection of a beam of electrons by electric and magnetic fields. APPARATUS: Electron beam tube, stand with coils, power supply,

### Lab 37: Magnetic Field ; Magnets - Drawing magnetic fields - Magnetic poles - Forces between magnets

Lab 37: Magnetic Field ; Magnets - Drawing magnetic fields - Magnetic poles - Forces between magnets 1) The following simple magnet configurations were shown to you in class - draw the magnetic field lines

### 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

10. A ircuits* Objective: To learn how to analyze current and voltage relationships in alternating current (a.c.) circuits. You will use the method of phasors, or the vector addition of rotating vectors

### The Simple DC Motor: A Teacher s Guide

The Simple DC Motor: A Teacher s Guide Kristy Beauvais Research Experience for Teachers Center for Materails Science and Engineering Massachusetts Institute of Technology August 2003 Motor Design: Steven

### Experiment #9, Magnetic Forces Using the Current Balance

Physics 182 - Fall 2014 - Experiment #9 1 Experiment #9, Magnetic Forces Using the Current Balance 1 Purpose 1. To demonstrate and measure the magnetic forces between current carrying wires. 2. To verify

### Lab 1: The Digital Oscilloscope

PHYSICS 220 Physical Electronics Lab 1: The Digital Oscilloscope Object: To become familiar with the oscilloscope, a ubiquitous instrument for observing and measuring electronic signals. Apparatus: Tektronix

### Electronic WorkBench tutorial

Electronic WorkBench tutorial Introduction Electronic WorkBench (EWB) is a simulation package for electronic circuits. It allows you to design and analyze circuits without using breadboards, real components

### 22.302 Experiment 5. Strain Gage Measurements

22.302 Experiment 5 Strain Gage Measurements Introduction The design of components for many engineering systems is based on the application of theoretical models. The accuracy of these models can be verified

### Pre-lab Quiz/PHYS 224 Magnetic Force and Current Balance. Your name Lab section

Pre-lab Quiz/PHYS 224 Magnetic Force and Current Balance Your name Lab section 1. What do you investigate in this lab? 2. Two straight wires are in parallel and carry electric currents in opposite directions

### TESTING WHETHER THE TEMPERATURE OF A MAGNET WILL AFFECT HOW FAR ITS MAGNETIC FIELD IS

TESTING WHETHER THE TEMPERATURE OF A MAGNET WILL AFFECT HOW FAR ITS MAGNETIC FIELD IS Kenan Balkas Cary Academy ABSTRACT The purpose of this experiment is about testing to see what the strengths will be

### CHAPTER 11: Flip Flops

CHAPTER 11: Flip Flops In this chapter, you will be building the part of the circuit that controls the command sequencing. The required circuit must operate the counter and the memory chip. When the teach

### Measurement of Charge-to-Mass (e/m) Ratio for the Electron

Measurement of Charge-to-Mass (e/m) Ratio for the Electron Experiment objectives: measure the ratio of the electron charge-to-mass ratio e/m by studying the electron trajectories in a uniform magnetic

### Measuring Impedance and Frequency Response of Guitar Pickups

Measuring Impedance and Frequency Response of Guitar Pickups Peter D. Hiscocks Syscomp Electronic Design Limited phiscock@ee.ryerson.ca www.syscompdesign.com April 30, 2011 Introduction The CircuitGear

### Permanent Magnet Motor Kit, Magnetic Reed Type. (SKY-ReedMotorKit) Instructions

Permanent Magnet Motor Kit, Magnetic Reed Type (SKY-ReedMotorKit) Instructions This kit contains powerful permanent magnets. Exercise caution when handling them as they can pull on iron tools and snap

### Basic voltmeter use. Resources and methods for learning about these subjects (list a few here, in preparation for your research):

Basic voltmeter use This worksheet and all related files are licensed under the Creative Commons ttribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,

### Lab 8: DC generators: shunt, series, and compounded.

Lab 8: DC generators: shunt, series, and compounded. Objective: to study the properties of DC generators under no-load and full-load conditions; to learn how to connect these generators; to obtain their

### Lab Exercise 1: Acoustic Waves

Lab Exercise 1: Acoustic Waves Contents 1-1 PRE-LAB ASSIGNMENT................. 2 1-3.1 Spreading Factor: Spherical Waves........ 2 1-3.2 Interference In 3-D................. 3 1-4 EQUIPMENT........................

### 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

### RLC Series Resonance

RLC Series Resonance 11EM Object: The purpose of this laboratory activity is to study resonance in a resistor-inductor-capacitor (RLC) circuit by examining the current through the circuit as a function

### Prelab Exercises: Hooke's Law and the Behavior of Springs

59 Prelab Exercises: Hooke's Law and the Behavior of Springs Study the description of the experiment that follows and answer the following questions.. (3 marks) Explain why a mass suspended vertically

### Problem 1 (25 points)

MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2012 Exam Three Solutions Problem 1 (25 points) Question 1 (5 points) Consider two circular rings of radius R, each perpendicular

### Physics 121 Sample Common Exam 3 NOTE: ANSWERS ARE ON PAGE 6. Instructions: 1. In the formula F = qvxb:

Physics 121 Sample Common Exam 3 NOTE: ANSWERS ARE ON PAGE 6 Signature Name (Print): 4 Digit ID: Section: Instructions: Answer all questions 24 multiple choice questions. You may need to do some calculation.

### E. K. A. ADVANCED PHYSICS LABORATORY PHYSICS 3081, 4051 NUCLEAR MAGNETIC RESONANCE

E. K. A. ADVANCED PHYSICS LABORATORY PHYSICS 3081, 4051 NUCLEAR MAGNETIC RESONANCE References for Nuclear Magnetic Resonance 1. Slichter, Principles of Magnetic Resonance, Harper and Row, 1963. chapter

### Windshield Wiper Motors

Windshield Wiper Motors Originally posted by Dan Masters, danmas@aol.com Also see http://www.advanceautowire.com/ WIPER OPERATION: There are three major components to a wiper motor: Motor Rotary to linear

### Easy Machining Center Setup

White Paper Document No. MWA-072-EN_01_1404 April 2014 Easy Machining Center Setup Using FANUC s Direct Input of Workpiece Origin Setting Measured and Tool Length Measurement features to easily establish

### The Sonometer The Resonant String and Timbre Change after plucking

The Sonometer The Resonant String and Timbre Change after plucking EQUIPMENT Pasco sonometers (pick up 5 from teaching lab) and 5 kits to go with them BK Precision function generators and Tenma oscilloscopes

### 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

### ELECTRICITE ET MAGNETISME.

Created by Neevia Personal Converter trial version Physique Fondamentale ELECTRICITE ET MAGNETISME. LA LOI D INDUCTION DE FARADAY (Faraday Law Induction) Magnetic Flux Faraday's Law of Induction Lenz's

### INVESTIGATING THE EFFECT OF THE MAGNETIC FIELD FROM A WIRE ON A COMPASS

Prize recipient Low-cost Division Apparatus Competition 2009 AAPT Summer Meeting Ann Arbor, MI Modern Miracle Medical Machines INVESTIGATING THE EFFECT OF THE MAGNETIC FIELD FROM A WIRE ON A COMPASS Sytil

### ECEN 1400, Introduction to Analog and Digital Electronics

ECEN 1400, Introduction to Analog and Digital Electronics Lab 4: Power supply 1 INTRODUCTION This lab will span two lab periods. In this lab, you will create the power supply that transforms the AC wall

### STATIC AND KINETIC FRICTION

STATIC AND KINETIC FRICTION LAB MECH 3.COMP From Physics with Computers, Vernier Software & Technology, 2000. INTRODUCTION If you try to slide a heavy box resting on the floor, you may find it difficult

### Harmonic oscillations of spiral springs Springs linked in parallel and in series

.3.26 Related topics Spring constant, Hooke s Law, oscillations, limit of elasticity, parallel springs, serial springs, use of an interface. Principle and task The spring constant D is determined for different

### A comparison of radio direction-finding technologies. Paul Denisowski, Applications Engineer Rohde & Schwarz

A comparison of radio direction-finding technologies Paul Denisowski, Applications Engineer Rohde & Schwarz Topics General introduction to radiolocation Manual DF techniques Doppler DF Time difference

### 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

### Lab 4: Magnetic Force on Electrons

Lab 4: Magnetic Force on Electrons Introduction: Forces on particles are not limited to gravity and electricity. Magnetic forces also exist. This magnetic force is known as the Lorentz force and it is

### OEM Manual MODEL 2350 ELECTRONIC DUAL CYLINDER SCALE

OEM Manual MODEL 2350 ELECTRONIC DUAL CYLINDER SCALE Scaletron Industries, Ltd. Bedminster Industrial Park 53 Apple Tree Lane P.O. Box 365 Plumsteadville, PA 18949 USA Toll Free: 1-800-257-5911 (USA &

### Experiment 5. Lasers and laser mode structure

Northeastern University, PHYS5318 Spring 2014, 1 1. Introduction Experiment 5. Lasers and laser mode structure The laser is a very important optical tool that has found widespread use in science and industry,

### ACCELERATION DUE TO GRAVITY

EXPERIMENT 1 PHYSICS 107 ACCELERATION DUE TO GRAVITY Skills you will learn or practice: Calculate velocity and acceleration from experimental measurements of x vs t (spark positions) Find average velocities

### Torque and Rotational Equilibrium

Torque and Rotational Equilibrium Name Section Torque is the rotational analog of force. If you want something to move (translation), you apply a force; if you want something to rotate, you apply a torque.

### Chapter 22: Electric motors and electromagnetic induction

Chapter 22: Electric motors and electromagnetic induction The motor effect movement from electricity When a current is passed through a wire placed in a magnetic field a force is produced which acts on

### Phys222 Winter 2012 Quiz 4 Chapters 29-31. Name

Name If you think that no correct answer is provided, give your answer, state your reasoning briefly; append additional sheet of paper if necessary. 1. A particle (q = 5.0 nc, m = 3.0 µg) moves in a region

### LAB 4: MOMENTUM AND COLLISIONS

1 Name Date Day/Time of Lab Partner(s) Lab TA LAB 4: MOMENTUM AND COLLISIONS NEWTON S THIRD LAW OBJECTIVES To examine action-reaction force pairs To examine collisions and relate the law of conservation

### Physics 3330 Experiment #2 Fall 1999. DC techniques, dividers, and bridges R 2 =(1-S)R P R 1 =SR P. R P =10kΩ 10-turn pot.

Physics 3330 Experiment #2 Fall 1999 DC techniques, dividers, and bridges Purpose You will gain a familiarity with the circuit board and work with a variety of DC techniques, including voltage dividers,

### Unit 24: Applications of Pneumatics and Hydraulics

Unit 24: Applications of Pneumatics and Hydraulics Unit code: J/601/1496 QCF level: 4 Credit value: 15 OUTCOME 2 TUTORIAL 4 DIRECTIONAL CONTROL VALVES The material needed for outcome 2 is very extensive

### Experiment #8: Magnetic Forces

Experiment #8: Magnetic Forces Purpose: To study the nature of magnetic forces exerted on currents. Equipment: Magnet Assembly and Stand Set of Current Loop PC oards Triple-Arm Pan alance 0 15 V dc Variable

### HOOKE S LAW AND OSCILLATIONS

9 HOOKE S LAW AND OSCILLATIONS OBJECTIVE To measure the effect of amplitude, mass, and spring constant on the period of a spring-mass oscillator. INTRODUCTION The force which restores a spring to its equilibrium

### 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

### TESTING THE STRENGTH OF DIFFERENT MAGNETS. Anthony Guzzo. Cary Academy ABSTRACT

TESTING THE STRENGTH OF DIFFERENT MAGNETS Anthony Guzzo Cary Academy ABSTRACT The purpose of the experiment was to determine the strongest type of magnet. The three types of magnets that were being tested