2 MAGNETISM AND ELECTRICITY- 0 MAIN

Front

What principle explains how an electric motor works?

Back

Electromagnetism.

Front

What happens when two magnets repel each other?

Back

They push apart.

Front

Why do magnets stick to refrigerator doors?

Back

Because the doors are made of metal.

Front

Is a magnetic field visible?

Back

No, a magnetic field is invisible.

Front

What happens if you break a bar magnet into 8 pieces?

Back

You would have 8 complete magnets.

Front

What is the definition of magnetism?

Back

Magnetism is a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.

Front

What are the two types of magnetic poles?

Back

North pole and South pole.

Front

What is the law of magnetic poles?

Back

Like poles repel each other, while opposite poles attract.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

What is the role of a commutator in an electric motor?

Back

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