Magnetic Fields

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What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

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What is energy?

Back

The ability to make things move or change.

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What is force?

Back

A push or a pull that can change the motion of an object.

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What does it mean to transfer?

Back

To move from one object to another or one place to another.

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What materials do you need to make a simple electromagnet?

Back

A coil, a nail, and a battery.

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What is a magnetic field?

Back

A region around a magnet where magnetic forces can be detected.

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What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field, while an electromagnet's field can be turned on and off with electric current.

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What is the role of a battery in an electromagnet?

Back

The battery provides the electric current needed to create the magnetic field.

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How does the strength of an electromagnet change?

Back

The strength can be increased by adding more coils of wire or increasing the electric current.

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What is the principle of electromagnetism?

Back

Electric current produces a magnetic field.

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