Define magnetic force.
Magnetic forces are the forces due to magnetic field of a magnet. It is an attractive or repulsive force exerted on a magnetic pole or a moving electric charge in a magnetic field.
Define the following:
1. Magnetic field
2. Electromagnetic force
3. Direction of electromagnetic force
(a) Define frictional force (or friction)
(b) Explain why frictional force is said to be a contact force.
(c) Explain why magnetic force is said to be a non-contact force.