A small square loop of wire of side l is placed inside a large square loop of wire of side L (L > l). The loops are coplanar and their centre coincide. The mutual inductance of the system is proportional to
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a
b
c
d
answer is B.
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Detailed Solution
Magnetic field produced due to large loop Flux linked with smaller loop
A small square loop of wire of side l is placed inside a large square loop of wire of side L (L > l). The loops are coplanar and their centre coincide. The mutual inductance of the system is proportional to