Shown a square loop of side 5 cm beign moved towards right at a constant speed of 1 cm/s. the front edge enters the 20 cm wide magnetic field at ` t=0`. Find the emf induced in the loop at `(a)t =2s, (b) t =10s, (c ) t= 22s (d)t =30s`.

Options

A. `3xx10^(-4)V`
B. `3xx10^(-5)V`
C. `2.5xx10^(-4)V`
D. `3.5xx10^(-4)V`

Answer

A

Explanation

At `t=2sec`
The rod `AB` can be replaced by a battery of emt `e=Bvl=0.6xx10^(-2)xx5xx10^(-2)=3xx10^(-4)V` .