Electromagnetic Quizziz

What happens to the strength of a magnetic field as you move away from the magnet?

• The strength of the magnetic field increases.

• The strength of the magnetic field doesn't change.

• The strength of the magnetic field is doubled.

• The strength of the magnetic field decreases.

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

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.

What does this image show?

• Parallel circuit

• Series circuit

• Magnet

• Electromagnet

The area of magnetic force around a magnet is known as its ____________.

• magnetism

• magnetic current

• magnetic field

• electric current

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

A _____________ is a type of magnet that is created by the flow of electrical current through a wire.

The direction of the magnetic field is determined by what?

An electromagnet has a ___________ ___________ __________ that can be turned on or off by controlling the flow of current.