A square metallic wire loop of side 0.1 m and resistance of is moved with a constant velocity in a magnetic field of 2 Wb/m2 as shown in figure. The magnetic field is perpendicular to the plane of the loop. This loop is connected to a network of resistances. What should be the velocity of loop so as to have a steady current of 1 mA in loop?
Equivalent resistance of the given Wheatstone bridge circuit (balanced) is So total resistance in circuit is The emf induced in the loop, e = Bvl. So, induced current i