Aqa Electromagnetism

The area around a magnet is called the .....

• attraction zone

• work area

• magnetic field

• hot zone

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

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.

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NGSS.MS-PS2-5

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

• decrease

• increase

• not affect

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

• increases

• decreases

• stays the same

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NGSS.MS-PS2-3

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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NGSS.MS-PS2-3

While electric current is flowing through a wire, what surrounds the wire?

• a magnetic field

• a glowing light

• neutrons

• protons

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.

• Electricity always creates a magnetic field.

• Electricity is stronger than a magnetic field.

• Electricity prevents magnetic fields from occurring.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

How do you make an electromagnet stronger?

• Add a motor and/or lightbulbs

• Add more light bulbs and/or wire coils

• add more wire coils and/or a switch

• add more wire coils and/or batteries

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NGSS.MS-PS2-3

What type of core is best for electromagnets?

• Steel

• Iron

• Plastic

• Copper

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

• An electromagnet can be turned on/off.

• A magnet can be turned off.

• An electromagnet is stronger.