Electromagnetic Waves question bank (Physics)

A parallel-plate capacitor of $50\ \mu\text{F}$ contains a dielectric slab of constant ($k$) with the same dimensions. If a time-varying potential difference is applied at a rate of $50\ \text{V/s}$. What is the displacement current in the capacitor?

A parallel plate capacitor with plate area $A$ and plate separation $d$ is charged by constant current I. A plane surface of area $\mathrm{A} / 2$, parallel to the plates is drawn simultaneously between the plates. The displacement current through this area is