JEE Main 202131 Aug, Morning shiftPhysicsMediumElectromagnetic Induction and Alternating Currents149× since 2002
A small square loop of side 'a' and one turn is placed inside a larger square loop of side b and one turn (b >> a). The two loops are coplanar with their centres coinciding. If a current I is passed in the square loop of side 'b', then the coefficient of mutual inductance between the two loops is :