Motors, Generators, Transformers review

Generators are devices that convert _____ energy into _____ energy.

• chemical; mechanical
• mechanical; electrical
• electrical; mechanical
• potential; kinetic

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In a _______ a spinning turbine moves magnets which generates an electric current.

• Motor

• Generator

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What device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?  

• Electromagnet 
• Generator
• Electron Magnet 
• Motor

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What happens to the strength of an electromagnet as you add more coils around it?

• Increases
• Decreases
• Stays the same
• Stops completely

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What can you do to make electromagnets stronger?

• Increase number of coils of wire.

• Increase number of batteries used.

• Both A and B.

• Neither A nor B.

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What is produced by moving a permanent magnet through a coil of copper wire?

• electricity

• electromagnet

• light

• sound

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Electric motors are devices that convert _____ energy into  _____ energy.

• electrical; mechanical
• mechanical; electrical
• chemical; potential
• mechanical; kinetic

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When John plugs in a toy and turns it on, a marble is carried up to the top of a slide. At the top, a marble is released and it goes down a slide. What kind of energy transformation occurs to make this toy work?

• chemical to heat
• electrical to chemical
• sound to electrical
• electrical to mechanical

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In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.

• Wind
• Water
• Magnets
• Circuits

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The process of generating the current in a conductor is called as 

• Electro motive force 
• Electromagnetic induction 
• generator energy conversion 
• induced voltage

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