Electromagnetism

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a coil of wire, often wrapped around a core of ferromagnetic material.

Tags

NGSS.MS-PS2-3

Front

True or False: All metals stick to magnets.

Back

False. Only certain metals, such as iron, nickel, and cobalt, are attracted to magnets.

Tags

NGSS.MS-PS2-5

Front

What do opposite charges do?

Back

Opposite charges attract each other.

Front

Complete the statement: Particles with opposite charges ____________ and particles with same (or like) charges ____________.

Back

Particles with opposite charges attract and particles with same (or like) charges repel.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

What three minerals are attracted to a magnet?

Back

Iron, nickel, and cobalt are attracted to a magnet.

Tags

NGSS.MS-PS2-3

Front

What is the principle of electromagnetism?

Back

The principle of electromagnetism states that electric currents produce magnetic fields, and changing magnetic fields can induce electric currents.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnet where magnetic forces can be detected. It is represented by field lines that show the direction and strength of the magnetic force.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field without the need for an electric current, while an electromagnet's magnetic field can be turned on or off and can be controlled by the amount of electric current.

Front

What is the role of a core in an electromagnet?

Back

The core, usually made of ferromagnetic material, enhances the magnetic field produced by the coil of wire, making the electromagnet stronger.

Front

What happens when you increase the current in an electromagnet?

Back

Increasing the current in an electromagnet increases the strength of the magnetic field.