A magnetic wire of dipole moment 
is bent in the form of semi-circle. The new magnetic moment is
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
B
If length of wire is 2l, then magnetic moment,
(given)
As wire is bent in the form of semi-circle, effective distance between the ends is 2r.
So, new dipole moment, 
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