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 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 ?
Answer» Magnetic field produced by a current `i` in a large square loop at its centre is `B=(mu_(0)i2sqrt2)/(piL)` Therefore`phi=Mi==(mu_(0)i2sqrt2)/(piL)xxl^(2) rArr M=(2sqrt2mu_(0)l^(2))/(piL)`

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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 ?

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