Questions
The rms value of electric field of the light coming from sun in 720 N/C. The average energy density of em wave is
a
3.3 x10-3Jm-3
b
4.58 x10-6 Jm-3
c
6.37 x 10-9 Jm-3
d
81.35 x10-12 Jm-3
detailed solution
Correct option is B
total energy density of EM wave ε0(Erms)2= 8.85 x10-12x 7202= 4.58 x10-6Talk to our academic expert!
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The average energy density of electromagnetic wave given by will be nearly
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