In Hertz's experiment,the rods act as a/an ...... .

Who obtained electromagnetic waves for the first time in the laboratory?

What is the phase difference between the space current and the capacitive displacement current produced when radio waves pass through the ionosphere?

The potential difference between the two plates of a parallel plate capacitor changes at a rate of $10^6 \; V/s$. If the capacitance of the capacitor is $2 \; \mu F$, what is the displacement current in the dielectric of the capacitor?

Derive the expression for the displacement current term in the modified Ampere's circuital law. Define displacement current and state its $SI$ unit.

What suggestion was made to correct the discrepancies in Ampere's circuital law?