Who first produced electromagnetic waves?

Electromagnetic waves can be produced by . . . . . . .

How are electromagnetic waves produced?

Which equations are called Maxwell's equations?

Which of the following statements is true for displacement current?

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 $= d$). Neglecting the edge effects,find the displacement current through the capacitor.