Electricity & Magnetism

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.

Front

How can you make an electromagnet stronger?

Back

You can make an electromagnet stronger by increasing the number of loops of wire in the coil or by increasing the electric current flowing through the wire.

Front

What is magnetism?

Back

Magnetism is a force that arises from the motion of electric charges, particularly when electrons spin in the same direction, creating an invisible force.

Front

What surrounds a current flowing through a wire?

Back

A current flowing through a wire is surrounded by a magnetic force.

Front

What are the two types of electric charges?

Back

The two types of electric charges are positive and negative.

Front

What is the relationship between electricity and magnetism?

Back

Electricity and magnetism are interrelated; electric currents create magnetic fields, and changing magnetic fields can induce electric currents.

Front

What is a magnetic field?

Back

A magnetic field is the 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.

Front

What is the role of a core in an electromagnet?

Back

The core, often made of iron, enhances the magnetic field produced by the coil of wire, making the electromagnet stronger.

Front

What happens when you reverse the current in an electromagnet?

Back

Reversing the current in an electromagnet reverses the direction of the magnetic field.

Front

What is static electricity?

Back

Static electricity is the buildup of electric charge on the surface of objects, which can result in sparks or shocks when the charge is discharged.