A bar magnet of magnetic moment `200 A-m^(2)` is suspended in a magnetic field of intensity `0.25 N//A-m`. The couple required to deflect it through `30^(@)` is
A
50 N-m
B
25 N-m
C
20 N-m
D
15 N-m
Text Solution
Verified by Experts
The correct Answer is:
B
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