Find the mutual inductance in the arrangement,when a small circular loop of wire of radius'`R`'is placed inside a large square loop of wire of side `L(L>>R)`.The loops are coplanar and their centres coincide :

Options

A. `M=(2sqrt(2)mu_(0)R^(2))/(L)`
B. `M=(sqrt(2)mu_(0)R^(2))/(L)`
C. `M=(2sqrt(2)mu_(0)R)/(L^(2))`
D. `M=(2sqrt(2)mu_(0)R)/(L^(2))`

Answer

A