Introduction to Magnetism and Electromagnetism

Front

What is a magnet?

Back

A magnet is a body that can attract and hold ferromagnetic substances like iron, steel, and nickel.

Front

What are the two types of magnets?

Back

Natural magnets (found in nature) and artificial magnets (made by rubbing against a natural magnet or using electricity).

Front

What are the properties of magnets?

Back

Magnets have two poles: north and south. Like poles repel each other, while opposite poles attract.

Front

What is a magnetic field?

Back

The space around a magnet where its influence can be felt.

Front

What is magnetic flux?

Back

Magnetic flux is the total number of magnetic field lines passing through a surface.

Front

What is induction in magnetism?

Back

Induction is the process of generating a magnetic field in a material when it is placed in a magnetic field.

Front

What is electromagnetism?

Back

Electromagnetism is the interaction between electricity and magnetism.

Front

What is the right-hand rule in magnetism?

Back

The right-hand rule helps determine the direction of the magnetic field around a current-carrying wire.

Front

What is a direct current (DC) motor?

Back

A DC motor is a machine that converts electrical energy into mechanical energy using direct current.

Front

What is the function of a commutator in a DC motor?

Back

The commutator reverses the direction of current in the motor to keep it turning in the same direction.