Question
The rms value of the electric field of the light coming from the Sun is 720 N/C. The average total energy density of the electromagnetic wave is
-
3.3 × 10−3 J/m3
-
4.58 × 10−6 J/m3
-
6.37 × 10−9 J/m3
-
81.35 × 10−12 J/m3
Solution
B.
4.58 × 10−6 J/m3
