Magnetic induction at the centre of a circular loop of area m ^2 is 0.1 tesla. The magnetic moment of the loop is ( ₀= permeability of air )

Step-by-step solution

Magnetic induction at the centre of circular loop B= ₀ 2 n i r Magnetic moment of the loop array rlr M & =n i A= 2 B r A ₀ & & = 2 0.1 1 (1)^2 ₀ & [ r=1] & = 0.2 ₀ & array