Electromagnetic Waves Question 8
Question 8 - 01 February - Shift 2
The ratio of average electric energy density and total average energy density of electromagnetic wave is:
(1) 2
(2) 1
(3) 3
(4) $\frac{1}{2}$
Show Answer
Answer: (4)
Solution:
Formula: Energy density
$<u_E>=<u_B>=\frac{1}{2}<u _{\text{total }}>$
So $\frac{\langle u_E\rangle}{\langle u _{\text{total }}\rangle}=\frac{1}{2}$
