Electromagnets, Generators and Motors

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

What is a generator?

Back

A generator is a device that converts mechanical energy into electrical energy using electromagnetic induction.

Front

What is a motor?

Back

A motor is a device that converts electrical energy into mechanical energy, typically using electromagnetic principles.

Front

What is a non-contact force?

Back

A force that pushes or pulls without touching another object.

Front

What is created by the flow of electric current?

Back

A magnetic field.

Front

What happens to electrons when a neutral object becomes positively charged?

Back

Electrons are removed from the object.

Front

What happens to electrons when a neutral object becomes negatively charged?

Back

Electrons are added to the object.

Front

What is the relationship between electricity and magnetism?

Back

Electricity can create a magnetic field, and a changing magnetic field can induce an electric current.

Front

What is the principle of electromagnetic induction?

Back

Electromagnetic induction is the process by which a changing magnetic field can induce an electric current in a conductor.

Front

What is the role of a commutator in a motor?

Back

A commutator reverses the direction of current flow in the motor windings, allowing for continuous rotation.