A square loop of side `12 cm` with its sides parallel to `x` and `y`- axes is moved with a velocity `8 cm//s` along positive `x`-direction in an environment containing magnetic field along `+ve` z-direction. The field has a gradient of `10^(-3) "tesla"//"em"` along `-ve` x-direction (increasing along `-ve` x-axis) and also decreases with time at the rate of `10^(-3) "tesla"//s`. The emf induced in the loop is

Explanation

(ii) Rate of change of flux = induced emf
`= (0.12)^2 xx 10^(-3) xx 8`
`= 11.52 xx 10^(-5)` Wb/s in -z direction.