Questions
A magnet of magnetic moment ‘M’ is in the form of a quadrant of a circle . If it is straightened its new magnetic moment will be
a
Mπ2
b
22Mπ
c
2Mπ
d
Mπ22
detailed solution
Correct option is D
M'=Mθ2sinθ2 ⇒M'==Mπ22sinπ4=Mπ412=Mπ22Talk to our academic expert!
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