Magnetic induction at the centre of a circular loop carrying a current is B . If A is the area of the coil, the magnetic dipole moment of the loop is

Question

Magnetic induction at the centre of a circular loop carrying a current is B . If A is the area of the coil, the magnetic dipole moment of the loop is, B A 2 μ 0 π, B A A μ 0, B A A μ 0 π, 2 B A μ 0 A π

MARKS App · Accepted Answer

B = μ 0 i 2 r , A = π r 2 , r = A π m = i A = B × 2 r μ o × π r 2 = 2 B μ​ o π r 3 = 2 B π μ​ o ( A π ) 3 2 = 2 B A μ​ o A π

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