A conducting rod $PQ$ of length $L = 1.0\,\text{m}$ is moving with a uniform speed $v = 20\,\text{m/s}$ in a uniform magnetic field $B = 4.0\,\text{T}$ directed into the paper. A capacitor of capacity $C = 10\,\mu\text{F}$ is connected as shown in the figure. Then