Question

The magnetic dipole moment of a current loop is independent of

• A. number of turns
• B. area of the loop
• C. current in the loop
• D. magnetic field in which it is lying

Answer 1

Answer: (D)

magnetic field in which it is lying

Answer 2

Magnetic dipole moment of a current is given by
$M=N I A$
where $N=$ number of turns
$I=$ current in a loop
$A=$ area of the loop
From the above relation it is clear that magnetic dipole moment of a current loop is independent of the magnetic field in which it is lying.