Calculate the magnetic moment when a field of B= 51 units is subjected to a torque of 20 units.

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1.	Calculate the magnetic moment when a field of B= 51 units is subjected to a torque of 20 units.
A.	a)0.39
B.	b)4.2
C.	c)2.55
D.	d)3.21
Answer» B. b)4.2

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