"Flashcard 4": Non-Contact Forces and Electromagnetism

Front

What happens to the magnetic field surrounding the wires when the supply of electricity to an electromagnet is cut off?

Back

The magnetic field disappears.

Front

At which labeled location is the magnetic force the strongest in a magnetic field diagram?

Back

C

Front

What change would increase the magnetic force between two magnets?

Back

Moving the magnets closer together.

Front

What type of particles are transferred to a student's body from a plastic slide to cause a small electric shock?

Back

Electrons.

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

How can the strength of an electromagnet be increased?

Back

By increasing the number of coils of wire or increasing the current.

Front

What is the role of electrons in electricity?

Back

Electrons are negatively charged particles that flow through conductors to create electric current.

Front

What is a magnetic field?

Back

An area around a magnet where magnetic forces can be detected.

Front

What materials can enhance the strength of a magnet?

Back

Ferromagnetic materials like iron, nickel, and cobalt.

Front

What is the difference between contact and non-contact forces?

Back

Contact forces require physical touch, while non-contact forces act at a distance.