ElectroMagnetic InductionHard

Question

Loop A of radius (r < < R) moves towards loop B with a constant velocity V in such a way that their planes are always parallel. What is the distance between the two loops (x) when the induced emf in loop A is maximum -
                                                 

Options

A.R
B.
C.
D.R

Solution

φ = BA =
e =
For e to be maximum
= 0 ⇒ x =

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