A small square loop of wire of side `l` is placed inside a large square loop of wire of side `L (L gt gt l)`. The loops are coplanar and their centre coincide. What is the mutual inductance of the system ?A. `l//L`B. `l^(2)//L`C. `L//l`D. `L^(2)//l`

A small square loop of wire of side `l` is placed inside a large squar

1.	A small square loop of wire of side `l` is placed inside a large square loop of wire of side `L (L gt gt l)`. The loops are coplanar and their centre coincide. What is the mutual inductance of the system ?A. `l//L`B. `l^(2)//L`C. `L//l`D. `L^(2)//l`
Answer» Correct Answer - B Magnetic field produced by a current`i` in a large square loop at its centre `B prop (i)/(L)" "` say `B = K(i)/(L)` `:.` Magnetic flux linked with smaller loop, `phi = B.S " " phi = (K(i)/(L))(l^(2))` Therefore, the mutual inductance `M = (phi)/(i) = K(l^(2))/(L)` or `M prop (l^(2))/(L)`

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A small square loop of wire of side `l` is placed inside a large square loop of wire of side `L (L gt gt l)`. The loops are coplanar and their centre coincide. What is the mutual inductance of the system ?A. `l//L`B. `l^(2)//L`C. `L//l`D. `L^(2)//l`

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