Electricity and Magnetism

As the temperature of most conductors increases, the __________ increases.

• resistance

• voltage

• ampere

• electron

Tags

NGSS.MS-PS1-4

For a constant voltage, increasing the resistance will cause the current to ________

• increase

• stop

• rush

• decrease

The electrons in an insulator are _______ bound to their atoms.

• not

• tightly

• never

• forever

Electric field is defined as force per charge. It is measured in units of newtons divided by __________.

• watts

• coulombs

• mass

• grams

Tags

NGSS.HS-PS2-4

Loren places two bar magnets on a table. She slowly slides one magnet closer to the second magnet. Eventually, the second magnet begins to move away from the first. What can she conclude about the repulsive force between the magnets?

• The force increases with increasing distance between the magnets.

• The force increases with decreasing distance between the magnets.

• The force is unaffected by the distance between the magnets.

• There is no force between the magnets.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What will happen if you increase the electric current that is flowing through an electromagnet?

• The magnet will become weaker.

• The poles of the magnet will reverse.

• The magnet will become stronger.

• The magnet will become permanent.

Tags

NGSS.MS-PS2-3

Which of the following procedures would increase the amount of electricity that is produced in a generator?

• Add more coils of wire.

• Spin the magnet more slowly.

• Use a weaker magnet.

• Reduce the number of coils of wire.

When an electric current flows through a wire:

• a gravitational field is created around the wire.

• the wire becomes very cold.

• the wire begins to spin.

• a magnetic field is created around the wire.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is true about the relationship between electricity and magnetism?

• Electricity can be used to create a magnet.

• Magnetism and electricity cannot be converted into one another.

• Magnetism is based on how gravity attracts electrical energy.

• Electrical energy and magnetism cancel each other out.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

A coil of wire with an electric current passing through it has what effect on a magnet?

• The magnet is not affected by the current.

• The positive pole of the magnet is attracted to the electric current.

• The magnet loses its magnetism.

• The magnet reverses its polarity.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5