ifos • paper_1 • electrodynamics
[UPSC IFoS 2018] Electromagnetic Theory (Q335, 8M)
In free space, the electric field of electromagnetic wave is given by \vec{E}(x, t) = 100 \cos (\omega t - kx) \hat{y}\text{ volt/metre} Find the average power crossing a circular area of radius 2\text{ metres} in the yz-plane.
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