The capacitance of a capacitor is $2 \ pF$. If the electric field inside the capacitor changes at a rate of $10^{12} \ V \ s^{-1}$,the displacement current is ..... $A$.

What did Hertz observe in his experiment to produce electromagnetic waves?

The charge on a parallel plate capacitor varies as $q = q_0 \cos(2\pi \nu t).$ The plates are very large and close together (area $= A,$ separation $= d$). The displacement current through the capacitor is

$A$ parallel plate capacitor consists of two circular plates each of radius $2 \,cm$, separated by a distance of $0.1 \,mm$. If the potential difference across the plates is varying at the rate of $5 \times 10^6 \,Vs^{-1}$, then the value of displacement current is

What is called displacement current?

The source of a time-varying magnetic field may be:
$(A)$ $A$ permanent magnet
$(B)$ An electric field changing linearly with time
$(C)$ Direct current
$(D)$ $A$ decelerating charged particle
$(E)$ An antenna fed with a digital signal
Choose the correct answer from the options given below: