Brainpop Electromagnet Induction

What is the relationship between electricity and magnetism? Choose the best answer.

• Electricity is a form of magnetism.

• Magnetism is a form of electricity.

• Electricity can be converted to magnetism and vice versa.

• They are not closely related at all.

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When an electric current runs through a wire, a magnetic field is induced…

• around the wire.

• parallel to the wire.

• under the wire.

• through the wire.

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In physics, to "induce" something is to:

• Make it more powerful

• Create it

• Turn it into something else

• Reverse its direction

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The faster the magnet moves through the coil

• the stronger the induced current

• the weaker the induced current

• there is no change in the current

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Electromagnetic induction

• is the ability of an electric current to create an magnetic field AND the ability of a magnetic field to create an electric current.

• ability of magnets to create an electric field

• show that magnets have north and south poles and nothing more

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Electrical generators move ______ to create an electrical current.

• protons

• circuits

• magnets

• miniature farm animals

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Electric motors convert electricity into mechanical ________.

• friction

• current

• circuits

• motion

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What might happen if transformers didn't exist?

• The electricity in your house might have an extremely high voltage

• Electricity could not be distributed through power lines to people's homes

• Electricity could not be created at power plants

• The direction of the electric current in your home might switch back and forth

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