3.4 Magnets and Electricity flashcards

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Last updated 12:12 PM on 6/13/26
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12 Terms

1
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A magnet creates electricity by using

a magnetic field to push and pull electrons in an object.

<p>a magnetic field to push and pull electrons in an object.</p>
2
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Magnets create electrical energy in a

generator

<p>generator</p>
3
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An electromagnet is an object that acts as a

magnet when an electric current moves through it

<p>magnet when an electric current moves through it</p>
4
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An electromagnet is created when an iron nail is

wrapped in coils of wire

<p>wrapped in coils of wire</p>
5
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The electric current flowing through the wire causes a

magnetic field to develop through the wire loops

<p>magnetic field to develop through the wire loops</p>
6
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Electromagnets can be turned

on and off

<p>on and off</p>
7
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Electromagnets are stronger than

other types of magnets

<p>other types of magnets</p>
8
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Electromagnets are used in all __________ of electric motors

rotors

<p>rotors</p>
9
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What two things can make an electromagnet stronger?

more wire loops around the nail; place the nail in the coil.

<p>more wire loops around the nail; place the nail in the coil.</p>
10
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What are machines that turn mechanical energy into electrical energy?

generators

<p>generators</p>
11
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What creates mechanical energy for generators?

Wind, water, or an engine.

<p>Wind, water, or an engine.</p>
12
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Electric motors in automobiles use what two things to work?

electricity and magnetism

<p>electricity and magnetism</p>