Question

A strong bar magnet is placed vertically above a horizontal wooden board. The magnetic lines of force will be
(a) only in horizontal plane around the magnet
(b) only in vertical plane around the magnet
(c) in horizontal as well as in vertical planes around the magnet
(d) in all the planes around the magnet

Answer 1

Answer:

in all planes around magnet

Explanation:

as they don't require any medium and no medium affects them

Answer 2

The magnetic lines are concentric circles as they are in the wire carrying the current. So, the magnetic lines of force will be in all the planes around the magnet.

Explanation:

• It is to be understood that the magnetic field is represented by the curved lines.
• The magnetic lines of force are drawn in such a way that the number of lines is related to the strength of the magnetic field at a particular point and to any curve’s tangent at a particular point.
• This is alone the magnetic force’s direction at that point.