The magnetic moments associated with two closely wound circular coils A and B of radius r A = 10 cm and r B = 20 cm respectively are equal if: (Where N A , I A and N B , I B are number of turn and current of A and B respectively)
Text Solution
Verified by ExpertsThe correct answer is:
C
M = NIA
M A = M B
N A I A = 4N B I B
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