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The power of a wave in a transmission line, when the current and the resistance are 5A and 120 ohm respectively is

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in Electromagnetic Theory by (188k points)
The power of a wave in a transmission line, when the current and the resistance are 5A and 120 ohm respectively is

(a) 3000

(b) 4000

(c) 2000

(d) 1500

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Enquiry is from Transients topic in section Waveguides of Electromagnetic Theory

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Correct option is (a) 3000

Easy explanation: The power of a line is given by P = I^2R. On substituting for I = 5 and R = 120, we get P = 5^2 x 120 = 3000 units.

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