Sci U2.2: Noncontact Forces

Front

What are the components of an electromagnet?

Back

Battery, insulated wire, and iron nail.

Front

What kind of magnet can be turned on and off?

Back

Electromagnet.

Front

What happens when LIKE poles on magnets are brought together?

Back

They repel each other.

Front

What type of material allows charges (electrons) to easily flow through them?

Back

Conductor.

Front

Which electromagnet is the strongest?

Back

Electromagnet A.

Front

What is a noncontact force?

Back

A force that can act at a distance without physical contact, such as magnetic or gravitational forces.

Front

What is the principle behind electromagnetism?

Back

Electric current creates a magnetic field.

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows electric charges to flow easily, while an insulator resists the flow of electric charges.

Front

What is the role of the iron core in an electromagnet?

Back

It enhances the magnetic field produced by the electric current.

Front

What is the effect of increasing the number of coils in an electromagnet?

Back

It increases the strength of the magnetic field.