Electric and Magnetic Forces Test

How do electromagnets differ from regular magnets?

• They can be turned on and off

• Their strength can be changed

• All of the above

Tags

NGSS.MS-PS2-3

This force occurs when there is an attractive and repulsive force between two poles.

• Magnetic

• Electric

• Electromagnetism

Tags

NGSS.MS-PS2-3

In a magnet, the opposite poles will

• Repel

• Attract

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The magnetic field of a magnet is ______ further away from the magnet.

• Stronger

• Weaker

• The same

Tags

NGSS.MS-PS2-3

Electricity is

• The collection or flow of electrons in the form of an electric charge

• The collection or flow of protons in the form of electric charge

• The attractive and repulsive between poles

In a magnetized object, all or most of the magnetic domains are arranged in what way?

• All the same direction

• All opposite directions

• Half one direction and half the opposite direction

• Arrangement of domains doesn't impact the magnetism of the object.

What will happen to the force between the two magnets if they are pulled farther apart?

• The force would be weaker

• The force would be stronger

• The force would stay unchanged

• The force would reserse the poles

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Choose two ways you may increase the strength of an electromagnet.

• Increase the number of loops of wire

• Increasing the current or voltage.

• Increasing the distance between the battery and nail.

• Decreasing the number of loops of wire.

A ________ circuit is one in which the pathway of electrical current is complete or unbroken.

• open

• closed

• series

An __________ is a device which converts electricity to mechanical energy.

• magnet

• electromagnet

• electric motor

Tags

NGSS.MS-PS3-5