Questions
The RMS value of the electric field of the light coming from sun is
a
3.3×10−3J/m3
b
4.58×10−6J/m3
c
6.37×10−9J/m3
d
81.35×10−12J/m3
detailed solution
Correct option is B
In electromagnetic waves, electric energy density is equal to magnetic energy density.Total energy density=2xelectric energy=2(12ε0E2)=2×12×8.854×10−12×(720)2=4.58×10−6J/m3Talk to our academic expert!
Similar Questions
In a region of free space the electric field at some instant of time is and the magnetic field is . The pointing vector for these fields is
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