How does a charge $q$ oscillating at certain frequency produce electromagnetic waves? Sketch a schematic diagram depicting electric and magnetic fields for an electromagnetic wave propagating along the Z-direction.

Figure shows a circular region of radius $R$ in which uniform magnetic field $B$ exists. The magnetic field is increasing at a rate $\frac{dB}{dt}.$ The induced electric field at a distance $r$ from the centre for $r<R$ is

A parallel plate capacitor with circular plates of radius $R$ is being charged as shown. At the instant shown, the displacement current in the region between the plates enclosed between $\frac{R}{2}$ and $R$ is given by