Question
Physics Question on Magnetic Field
A bar magnet when suspended horizontally and perpendicular to earth's field experiences a torque of 3 x 10-4 Nm. The Magnetic moment of the magnet would be:
(take horizontal component of Earth's magnetic field at the place 0.4 × 10-4T)
A
7.5 JT -1
B
5.7 JT-1
C
0.75 JT-1
D
0.57 JT-1
Answer
7.5 JT -1
Explanation
Solution
The correct option is(A):7.5 JT-1