Electricity and Magnetism Review

While electric current is flowing through a wire, what surrounds the wire?

• a magnetic field
• a glowing light
• neutrons
• protons

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What two forces are required for generators and electric motors to work?

• magnetism and thermal

• electricity and thermal

• electricity and magnetism

• magnetism and radiant

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What is the transfer of electricity in a generator?

• Mechanical to Electrical 
• Physical to Potential 
• Electrical to Mechanical
• Yogurt to Light

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What is the transfer of electricity in a motor?

• chemical to mechanical 
• electrical to mechanical
• mechanical to electrical 
• physical to potential 

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This picture shows a turbine generator used to produce electricity at a geothermal power plant.
Electricity is produced by using steam to _____________.

• heat the turbine generators
• spin the turbine generators 
• reduce friction in the turbine generators
• reduce emissions from the turbine generators

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What would happen if you broke a bar magnet into 8 pieces?

• You would have 8 half magnets

• You would have 4 complete magnets

• You would have 8 complete magnets

• They wouldn't be magnets anymore

A transformer actually transforms

• voltage

• magnetic field lines

• generators into motors

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A device that transforms mechanical energy to electrical energy is a

• generator

• motor

• transformer

• magnet

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A device that transforms electrical energy to mechanical energy is a

• generator

• motor

• transformer

• magnet

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The transformer shown is what type?

• step-up
• step-down
• current transformer
• isolation transformer