The figure shows a capacitor made of two circular plate each of radius 12 cm and separated and separated by 5.0 mm . The capacitor is being changed by an external source (not shown in the figure ). The changing current is constant and equal to $0.15\;A$ Calculate the capacitor and the rate of change of potential difference between the plates

Question

$\begin{array}{1 1} 1.87 \times 10^9\;vs^{-1} \\1.87 \times 10^9\;vs^{-9} \\ 1.87 \times 10^9\;vs \\ 1.87 \times 10^{-9}\;vs \end{array} $