Notes

Power Dissipated in Moving the Conductor…

Power Dissipated in Moving the Conductor – For uniform motion of rod PQ, power delivered by external source is given as
P_mech = P_ext = dW/dt = F_ext×v = B²vl²/R×v
⇒ [P_mech = B² v² l²/R
Also, electrical power dissipated in resistance or rate of heat dissipation across resistance is given as
P_thermal = H/t = I² R = (Bvl/R)²×R; P_thermal = B² v² l²/R