A parallel plate capacitor has circular plates, each of radius 5.0 cm. It is being charged so that electric field in the gap between its plates rises steadily at the rate of 10¹² V/m. What is the magnitude of displacement current ?

0.07 A

$I_D=\varepsilon_0 \frac{d \phi_E}{dt}=\varepsilon_0 \pi r^2 \frac{dE}{dt}=8.85 \times 10^{-12} \times \pi \times\left(5 \times 10^{-2}\right)^2 \times 10^{12}$ = 0.07 A