A steel wire of length 1 has magnetic moment M.it is bent in L shape then the new magnetic moment is
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Answer:
Magnetic moment, M=ml
l
M
=m, where m is the polestrength.
Therefore distance between poles =
(l/2)
2
+(l/2)
2
=
2
l
So, M
′
=
2
ml
=
2
M
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