Faraday

Name the following law: A changing magnetic field creates an electric current in a coil.

• Ampere's Law

• Faraday's Law

• Lenz's Law

• Coulomb's Law

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What would happen if I move a bar magnet in and out of a coil of copper wire?

• Electric current would disappear 

• The magnet would explode 

• Electric current will flow through the wire

• It would produce a gravitational field

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Law says that the Induced current is proportional to the change of magnetic flux 

• Lenz'

• Faraday's

• Ampere's

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In 1831 who discovered electromagnetic induction?

• Thomas Edison

• Nikola Tesla

• Michael Faraday

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What is the main process occurring in an electrolytic cell?

• Chemical energy is converted into electrical energy.

• Electrical energy is converted into chemical energy.

• Thermal energy is converted into chemical energy.

• Mechanical energy is converted into electrical energy.

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 could the experimenter increase the amount of electricity being induced by this experiment?

• Increase the number of coils

• Decrease the number of coils

• Flip the magnet around

• Nothing, the amount of electricity cannot be increased

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As the north pole of the magnet is moved into the coil, the magnetic flux is _________.

• increasing

• decreasing

• remains constant

• depends on the speed of the magnet

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Electromagnetic induction is change in ___________________. 

• surface area

• magnetic poles

• magnetic flux

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Voltage can be induced in a wire by

• moving the wire near a magnet.

• moving a magnet near the wire.

• changing the current in a nearby wire.

• all of these

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