cse • paper_1 • electrodynamics
[UPSC CSE 2016] Electromagnetic Theory (Q343, 10M)
In free space, the electric field of electromagnetic wave is given as \vec{E}(x,t)=120\cos(\omega t-kx)\hat{y}\,\mathrm{V/m}. Find the average power crossing a circular area of radius one metre in the yz-plane.
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