Question

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: (b).2 x 10⁸ m/sec

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Q. 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)...

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