A rectangular wire loop of sides 8 cm and 2 cm with a small cut is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the loop. What is the emf developed across the cut if the velocity of the loop is 1 m. `s^(-1)` in a direction normal to the
longer side

Explanation

`e=Blv=0.3xx8xx10^(-2)xx10^(-2)" [in longer side, l = 8 cm]"`
`=2.4xx10^(-4)V`
`therefore` Time, `t_(1)=(l')/(v)=(2)/(1)=2s" [l' = shorter side = 2 cm]"`