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Physics
Physics
Problem
A small square loop of wire of side
l
l
l
is placed inside a large square loop of wire of side
L
L
L
(
L
≫
l
L \gg l
L
≫
l
). The loops are co-planar and their centres coincide. The mutual inductance of the system is proportional to a.
l
/
L
l/L
l
/
L
b.
l
2
/
L
l^2/L
l
2
/
L
c.
L
/
l
L/l
L
/
l
d.
L
2
/
l
L^2/l
L
2
/
l
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