Question
The r.m.s. value of the electric field of the light coming from the sun is 720 NC-1. The average total energy density of the electromagnetic wave is - 3.3 × 10-3 Jm-3
- 4.58 × 10-6 Jm-3
- 6.37 × 10-9 Jm-3
- 81.35 × 10-12 Jm-3
Solution
B.
4.58 × 10-6 Jm-3
