Question

The maximum torque acting on the magnet of length in a uniform magnetic field having induction tesla is 10 Nm. Calculate its pole strength.

Answer 1

Explanation:

Magnetic field of induction, B=0.2 T

Maximum torque acting in magnet, τ

m

=10 N−m

Maximum magnetic torque acting on a magnet, τ

m

=MB where M is the magnetic moment

⟹ M=

B

τ

m

∴ M=

0.2

10

=50 Am

2