Cheko

Lab Report Magnetism









* Table of Contents
I. Introduction 3
A. Background Information and Research 3
B. Objective…………………………………………………………………………………….3
C. Hypothesis…………………………………………………………………………………...3
D. Variables 4
II. Materials 4,5
III. Procedures…………………………………………………………………………………..5,6
IV. Results……………………………………………………………………………………….6,7
V.Calculations…………………………………………………………………………………….7
VI. Analysis……………………………………………………………………………..………...7
VII. Conclusion…………………………………………………….……………………………...7
VIII. Sources of error……………………………………………………………………………...7
IX. References ………………………………………………………………………………….7,8















I. Introduction
A. Background Information and Research:
Anelectric motor is a device that converts electrical energy into mechanical energy. (McLaughlin, William) The motors are made commonly by copper wire coil, a power source, and a permanent magnet. (Wikipedia) Most of the electric motors work with magnetism. The coil wants to get to the poles of the magnet when it is in contact with electricity. That process is called induction. Electric motors arefound on fans, blowers, pumps, etc. Electric motors can be powered by a direct or alternating current. (Wikipedia)
An electromagnet is a type of temporary magnet whose magnetic field is produced by the flow of an electric charge. (Wikipedia)Electromagnets are commonly made with a nail, a power supply, and thick copper wire coil. Electromagnets are temporary magnets,which mean that the magnetic field disappears when the electric current disappears. The greater the Voltage you have, the more magnetic power the electromagnet will have to attract things.
Generators are devices that convert mechanical energy into electrical energy. (L. Kaiser, Joseph) Generators are the opposite of electric motors, electric motors change electricalenergy to mechanical and generators do the opposite. Generators are commonly made by permanent magnets, a spinner, a light bulb, and copper wire coil. Generators are used in power supplies to convert the energy for homes. Generators can be done by different types:
* Wind Mills: convert the wind to electrical energy.
* Water wheel: converts the flow of water to energy.
* Steam engine:converts steam to mechanical energy.

B. Objective:
In this Lab an electric motor, an electromagnet, and a generator will be done to prove out how induction works with permanent magnets and copper wire coil.

C. Hypothesis:
Electric Motor

If a stronger magnet is used, then the circular coil will spin faster.

Electromagnet

If a greater voltage is used, then the electromagnetwill attract more things.

Generator

If more coil is surrounding the box with magnets, then the bulb will light on faster.
D. Variables:
Electric Motor:
1.- Independent (what changes): # of Volts because the battery can discharge more or less Volts every time, the copper wire ring because if it gets burned, you need to replace it.
2. - Dependent (what will be observed): # ofVolts to see at what Voltage the copper wire ring rotates completely, the copper wire ring to see how much it moves and how continued It does it.
3. - Controlled (what stays the same throughout the experiment): the magnet because the same magnet will be used in all the experiment.
Electromagnet:
1. - Independent (what changes): # of Volts to test the difference in attraction if more Voltage isacting on the electromagnet.
2. - Dependent (what will be observed): how much magnetic force does the electromagnet has. # Of Volts to realize which Voltage is
3. - Controlled (what stays the same throughout the experiment): size of the nail, number of spins of copper wire around the nail.
Generator:
1. - Independent (what changes): number of volts produced while spinning the nail.
2....