If the electric field intensity associated with a uniform plane electr – McqOptions

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1.	If the electric field intensity associated with a uniform plane electromagnetic wave travelling in a perfect dielectric medium is given by E(z, t) = 10 cos (2π x 10⁷t - 0.1 πz) volt/metre, then the velocity of the travelling wave is
A.	3.0 x 10⁸ m/sec
B.	2 x 10⁸ m/sec
C.	6.28 x 10⁷ m/sec
D.	2 x 10⁷ m/sec
Answer» C. 6.28 x 10⁷ m/sec

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