The relative magnetic permeability of the medium is 2.5 and the relative electrical permittivity of the medium is 2.25. Compute the refractive index of the medium.

Compute the speed of the electromagnetic wave in a medium if the amplitude of electric and magnetic fields are 3 x 10⁴ N C^–1 and 2 x 10^–4 T, respectively.

What is displacement current?

What are electromagnetic waves?

Write down the integral form of modified Ampere’s circuital law.

Consider a parallel plate capacitor whose plates are closely spaced. Let R be the radius of the plates and the current in the wire connected to the plates is 5 A, calculate the displacement current through the surface passing between the plates by directly calculating the rate of change of flux of electric field through the surface.

A transmitter consists of LC circuit with an inductance of 1 µH and a capacitance of 1 µF. What is the wavelength of the electromagnetic waves it emits?

Write notes on Gauss' law in magnetism.

Write notes on Ampere-Maxwell law.

Why are e.m. waves non-mechanical?