Q.
A square loop of side $20\,cm$ and resistance $1\, \Omega$ is moved towards right with a constant speed $v _{0}$. The right arm of the loop is in a uniform magnetic field of $5\, T$. The field is perpendicular to the plane of the loop and is going into it. The loop is connected to a network of resistors each of value $4 \,\Omega$. What should be the value of $v _{0}$ so that a steady current of $2 \,mA$ flows in the loop?
Solution:
