Physics - EMI/AC Question with Solution | TestHub

A$0.5 \mathrm{m}$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$0.15 \mathrm{T}$. If the resistance of the total circuit is$3\mathrm{\Omega },$calculate the force needed to move the rod in the direction as indicated with a constant speed of$2{\text{m s}}^{-1.}$