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Calculate the power loss in a transmission line with total resistance R = 75 Ω and voltage drop ΔV = 1200 V.

1. 19200 W
2. 19.2 kW
3. 1200 W
4. 75 W

Correct answer: 19.2 kW

Solution

The power loss in a transmission line is given by P = (ΔV)^2 / R. Substituting ΔV = 1200 V and R = 75 Ω, we get P = (1200)^2 / 75 = 19200 W = 19.2 kW.

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