Question

The intensity of a magnetic field around a bar magnet is low where____________.

the lines of force are sparse.

the lines of force are concentrated.​

Answer 1

The intensity of a magnetic field around a bar magnet is low where the lines of force are sparse.

Detailed Discussion:

• Magnetic Field Lines (also called lines of force) are imaginary lines that represent the direction of the magnetic field intensity.

• They also provide information on the direction of force experienced on a moving charge when they $\rm pa{s}s$ through the magnetic field.

• The magnetic field lines never intersect one another, because at the point of intersection of the lines, two different tangents can be drawn which would indicate two different directions of magnetic field intensity for the same point. This is not possible.

• Finally, the concentration of a magnetic field line provides information about the magnitude of field intensity that is present in that area. Higher the field intensity, higher is the force experienced by a moving charge in that field.

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