A square metal loop of side 10 cm and resistance 1Ω is moved with a constant velocity partly inside a uniform magnetic field of 4Wbm−2, directed into the paper, as shown in the figure. The loop is connected to a network of five resistors each of value 3Ω. If a steady current of 1 mA flows in the loop, then the speed (in cms−1 ) of the loop is