8.2 Notes

Drag and Drop

Faraday's Law of Induction says that the ​ faster a magnet passes through a coil the ​

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the voltage induced on the coil. This also means the ​

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a magnet passes through a coil, the ​

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the voltage induced on the coil.

Drag these tiles and drop them in the correct blank above

stronger

slower

weaker

Multiple Choice

What happens when an electric current flows through a wire?

• The wire begins to spin.

• Nothing happens.

• A field of gravity is created around the wire.

• A magnetic field is created around the wire.

Multiple Choice

What does this image show?

• Parallel circuit

• Series circuit

• Magnet

• Electromagnet

Multiple Select

How do you increase the strength of an electromagnet?

• Add a motor and/or light bulbs

• Add more light bulbs and wire coils

• Add more wire coils

• Increase the voltage

Multiple Select

What is/are the difference(s) between a magnet and an electromagnet?

• An electromagnet can be turned on/off.

• A magnet can be turned off.

• An electromagnet is stronger.

Multiple Choice

A _______________ is a current-carrying coil of wire with many loops.

• magnet

• electromagnet

• solenoid

• compass

Multiple Choice

How can a magnet be used to produce an electric current?

• Hold a magnet next to a piece of wire.

• Wrap wire around a magnet.

• Spin the magnet around inside a coil of wire.

Multiple Choice

A _____________ transforms mechanical energy into electrical energy.

• generator

• electromagnet

• circuit

• magnetic field

Multiple Choice

Increasing the number of coils in an electromagnet will _________ the power of the magnet.

• decrease

• increase

• not affect

Multiple Choice

This picture is an example of a ___________.

• Step Up Transformer

• Motor

• Step Down Transformer

• Generator