(a) Capacitance of the parallel plate capacitor C =
C = 80.1 × 10−12 F = 80.1 pF We know Q = CV I =
= 1.875 × 109 V s−1 (b) The magnitude of displacement current is equal to conduction current. ∴ Id = I = 0.15 A (c) Yes, Kirchhoff’s first law is very much applicable to each plate of capacitor as Id = I. So current is continuous and constant across each plate.