Electromagnetism and Right Hand Rules

The relationship between electricity and magnetism is called

• electrical energy.

• induced current.

• electromagnetism.

• ferromagnetism.

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This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.

• Use a smaller battery.

• Reverse the poles of the magnet.

• Remove all the coils and the nail.

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Surrounding every magnet is a(n) __________  __________.

• magnetic field

• electrical current

• smaller magnet

• funny saying

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What kind of magnet can be turned on and off?

• a refrigerator magnet

• an electromagnet

• magnetite

• iron

When two magnetic North poles are brought close to each other, they will

• attract

• repel

• create sparks

• cancel each other out

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

• decrease

• increase

• not affect

What type of core is best for electromagnets?

• Steel

• Iron

• Plastic

• Copper

As the strength of a magnetic field increases, the ability to attract metal objects ____________.

• increases

• decreases

• stays the same

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What conclusion can you draw from this graph?

• As current increases, magnetic strength decreases.

• As current increases, magnetic strength increases.

• As current decreases, magnetic strength increases.

• There is no relationship between current and magnetic strength.

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Electric currents passing through wires will produce a(n)

• solenoid

• magnet

• magnetic field

• insulator

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