Science

8th

grade

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Chapter 20 Lesson 2 Making Magnets with an Electric Current

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  • 1. Multiple Choice
    15 minutes
    1 pt

    Electronic devices create magnetic fields because they

    are magnets

    are compasses

    have moving particles with electric charge

  • 2. Multiple Choice
    15 minutes
    1 pt
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    How can you test to see if there is a current running through a wire?

    listen carefully to see if you hear a buzzing sound

    place several compasses around the wire

    place several batteries around the wire

  • 3. Multiple Choice
    15 minutes
    1 pt
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    The electromagnetic forces from a current carrying wire are strong enough to move the compass needle. The forces can be made stronger by

    making the wire shorter

    making the wire longer

    making the wire into loops

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