Question

Correct the mistakes, if any, in the following statements:
(a) Magnetic field is a quantity that has magnitude only.
(b) The magnetic field lines emerge from the south pole and merge at the north pole.

Answer 1

(a) Magnetic field is a quantity that has magnitude and direction. The magnetic field is defined as a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

(b) The magnetic field lines emerge from the north pole and merge at the south pole. (the statement is correct)

The main characteristics of magnetic field lines are:

1. In a single bar magnet, they attempt to form closed loops from pole to pole.

2. They never cross one another.

3. They all have the same strength.

4. Their density decreases with increasing distance from the poles.

5.They are considered to have direction as if flowing, though no actual movement occurs.

6. They flow from the south pole to the north pole within a material and north pole to the south pole in the air.