A small square loop of wire of side l is placed inside a large square loop of side L L ≫ l . If the loops are coplanar and their centres coincide, the mutual induction of the system is directly proportional to

Question

A small square loop of wire of side l is placed inside a large square loop of side L L ≫ l . If the loops are coplanar and their centres coincide, the mutual induction of the system is directly proportional to, l L, l 2 L, l L 2, l 2 L 2

MARKS App · Accepted Answer

M = ϕ i = B A i M = 4 × μoi 4 π ι i × 2 2 l 2 i = 4 × B o n e s i d e i ∝ l 2 L a s A ∝ l 2 a n d B ∝ 1 L

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