A `0.5m` long metal rod `PQ` completes the circuit as shown in the figure. The area of the circuit
Channel: Doubtnut
Date: 26/01/2020

A `0.5m` long metal rod `PQ` completes the circuit as shown in the figure. The area of the circuit is perpendicular to the magnetic field of flux density `0.15 T`. If the resistance of the total circuit is `3Omega` calculate the force needed to move the rod in the direction as indicated with a constant speed of `2 ms^(-1)`