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An electromagnetic wave travels along z-axis. Which of the following pairs of space and time varying fields would generate such a wave?

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An electromagnetic wave travels along z-axis. Which of the following pairs of space and time varying fields would generate such a wave? 

(a) Ex, By 

(b) Ez, Bx 

(c) Ey, Bz 

(d) Ey, Bx

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Best answer

Correct option (a)

Explanation:

Ex and By would generate a plane electromagnetic wave travelling in z-direction. E, B and k form a right handed system where k is along z-axis. (As, i x j = k)

∴ E is along x-axis and B is along y-axis

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