Question

What is magnetic moment?

Answer 1

Explanation:

Magnetic moment is a strength of magnetic field.

Formula is I*A

Answer 2

Answer:

MAGNETIC MOMENT

The torque exerted on a magnet or dipole when it is placed in a magnetic field.

OR

The magnetic moment of bar magnet is defined as a vector quantity having magnitude equal to the product of pole strength (m) with effective length (l).

i.e., M = ml

Here,

M is magnetic moment.

m is pole strength of magnet.

l is effective length of magnet.

• Magnetic moment is also called as magnetic dipole moment.
• Si unit of magnetic moment is Am^2(Ampere meter square).

Magnetic moment of a current carrying coil

M = i A

Here,

M is magnetic dipole moment

i is current.

A is area vector (towards north)

For n identical loops

M = Ni A

Here,

N is number of loops.

For clear understanding refers to the attachment.