Two identical loops , one of copper and the other of aluminium , are rotated with the same angular speed in the magnetic field . Compare (i) the induced emf and (ii) the current produced in the two coils .
Justify your answer .

Explanation

Since induced emf of a coil rotating in magnetic field B with angular velocity w is given by `E_(0) = N`
B A `omega` and induced current `I_(0) = (E_(0))/(R)`
(i) The ratio of induced emf = ` 1: 1`
(ii) The ratio of induced current = `1 :1`
Since , the induced emf does not depend upon the nature of coil .