Question

If number of turn, area and current through it is given by n, A and i respectively then its magnetic moment will be :-

Answer 1

Magnetic moment = BAnI

Where,

B - Magnetic field

A - Area of the coil

n - Number of turns

I - Current in the coil

Answer 2

then we say that

B = niA

where

• n is no. of turns
• I is current
• A is area