Question

The magnetic dipole moment of a short magnetic dipole at a distant point along the equator of magnet has a magnitude of 'X' in SI units. If the distance between the point and the magnet is halved then the magnitude of dipole moment will be ______.

Options

• 2X

• `1/2`X

• X

• `1/8`X

Answer 1

The magnetic dipole moment of a short magnetic dipole at a distant point along the equator of magnet has a magnitude of 'X' in SI units. If the distance between the point and the magnet is halved then the magnitude of dipole moment will be X.

Explanation:

The magnetic dipole moment is equal to the product of pole strength and dipole magnetic length. As a result, it is unaffected by the measurement point's distance. As a result, halving the distance between the point and the magnet has no effect.