Electricity and Magnetism Flashcard

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 can be turned on and off.

Front

What is the function of a simple electric motor?

Back

A simple electric motor works by converting electrical energy into mechanical energy through the interaction of a coil of wire and a magnet.

Front

What happens to an electromagnet when the electric current is increased?

Back

The magnet will become stronger.

Front

What is the role of a compass needle in relation to a magnet?

Back

The needle of a compass moves because the magnetic field of a magnet interacts with it.

Front

What does a generator do?

Back

A generator converts mechanical energy into electricity.

Front

What is magnetite?

Back

Magnetite is a naturally occurring mineral that is a type of iron ore and is one of the most magnetic materials found in nature.

Front

What is a permanent magnet?

Back

A permanent magnet is a magnet that maintains its magnetic properties without the need for an external power source.

Front

What is ferromagnetism?

Back

Ferromagnetism is a phenomenon where certain materials can become magnetized and retain their magnetism even after the external magnetic field is removed.

Front

What is the magnetic field?

Back

The magnetic field is the region around a magnet where magnetic forces can be observed.

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 only.