Electromagnetism Practice 1

 What condition is necessary for an electric charge to have a magnetic field around it?

• a. it must be in a copper wire
• b. it must be isolated from the opposite charge
• c. it must be moving
• d. it must be motionless

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Who discovered electromagnetic induction?

• Hans Christian Orsted
• Michael Faraday
• James Maxwell
• Heinrich Hertz

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Electromagnetism is when

• magnetism causes electricity
• electricity causes magnetism
• electricity and magnetism cancel each other out
• a strong magnet creates a permanent magnet

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The voltmeter is at 0 in this image. How would you manipulate the experiment to create electricity (measured in volts)?

• Flip the magnet around so the North pole is facing out
• Move the magnet back and forth
• Take the magnet out
• Add more coils around the paper cylinder

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How would flipping the magnet in this experiment change the current?

• The current would not change
• The current would go to the right
• There would be no current
• The current would go CRAZY

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A device that converts electrical energy into mechanical energy

• A. electromagnet
• B. electromagnetic induction
• C. electric motor
• D. electromagnetism

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A device that converts mechanical energy into electrical energy

• A. electric generator
• B. electric motor
• C. electromagnetic induction
• D. mechanical  generator

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The process of creating a current in a circuit by changing a magnetic field

• A. electric generator
• B. electric motor
• C. electromagnetic induction
• D. magnet

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What kind of magnet can be turned on and off?

• refrigerator magnet
• electromagnet
• magnetite
• iron

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If you wrap more coils around an electromagnet, it will become 

• brighter
• stronger
• weaker
• invisible

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