Module 7 Magnetism

Front

What is the role of copper wire in an electric motor?

Back

It carries the flow of electrons.

Front

Which material is commonly used as a core in an electromagnet?

Back

Iron.

Front

In which device is an electromagnet commonly used?

Back

A magnetic crane.

Front

What type of current is produced by a battery?

Back

Direct current (DC).

Front

Are all metals magnetic?

Back

False.

Front

What is magnetism?

Back

A physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.

Front

What is an electromagnet?

Back

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

Front

What is the difference between AC and DC current?

Back

AC (Alternating Current) changes direction periodically, while DC (Direct Current) flows in one direction.

Front

What is the purpose of a magnetic core in an electromagnet?

Back

To enhance the strength of the magnetic field.

Front

What is the principle behind the operation of a magnetic crane?

Back

It uses electromagnets to lift and move heavy ferromagnetic materials.