Q5
A) In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.0×1010 Hz and amplitude 48 V/m. What is the wavelength of the wave? [c=3×108m/s.]
B) In a plane electromagnetic wave, the electric field oscillatessinusoidally at a frequency of 2.0×1010 and amplitude 48V/m. What is the amplitude of the oscillating magnetic field? [c=3×108m/s.]
C) In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.0×1010 Hz and amplitude 48 V/m. Show that the average energy density of the E field equals the average energy density of the B field. [c=3×108m/s].