Show that average electric evergy density `(u_E)` of electic field is equal to average magnetic energy density `(u_E)` of magnetic field in electro magnetic wave.

The electric and magnetic fields in an electromagnetic wave are

Prove that average energy density of the oscillating electric field is equal to that of oscillating magnetic field.

Draw magnetic field lines due to a U-shaped magnet?

Is there a magnetic force exerted by a magnetic field on a stationary electric charge?

Show that the ratio of electric and magnetic field is equal to velocity of light(i.e. e.m. wave)

In what way is an electric field different from a magnetic field?

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.0 xx 10^10 Hz and amplitude 48 V m^-1 . Show that the average energy density of the E field equals the average energy density of the B field, [c = 3 xx 10^8 m s^-1 .]