# GEOLOGY

## EARTH SCIENCE

### MAGNETISM

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the magnetic attraction or repulsion of a magnet called?
 A the magnetic domain B the magnetic field C the magnetic pole D the magnetic force
Explanation:

Detailed explanation-1: -Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms. Each atom has electrons, particles that carry electric charges.

Detailed explanation-2: -Magnetic Force – Permanent Magnets Magnetism may also be induced by an electric current, or a current may be induced by magnetism. This relates the electric force and magnetic force, known as the Lorentz force law, where B is the magnetic field and a particle moves with velocity v.

Detailed explanation-3: -Magnetic forces are non contact forces; they pull or push on objects without touching them. Magnets are only attracted to a few ‘magnetic’ metals and not all matter. Magnets are attracted to and repel other magnets.

Detailed explanation-4: -What is the magnetic force? The magnetic force is a consequence of the electromagnetic force, one of the four fundamental forces of nature, and is caused by the motion of charges. Two objects containing charge with the same direction of motion have a magnetic attraction force between them.

There is 1 question to complete.