The electric field in an electromagnetic wave is given as \(\vec{E}=20\,sin\,ω(t-\frac{x}{c})\vec{j}NC^{-1}\)
Where ω and c are angular frequency and velocity of electromagnetic wave respectively. The energy contained in a volume of 5 x 10-4 m3 will be
(Given ε0 = 8.85 x 10-12 C2 / Nm2 )
(1) 28.5 x 10-13 J
(2) 17.7 x 10-13 J
(3) 8.85 x 10-13 J
(4) 88.5 x 10-13 J
