A high-voltage transmission line with a resistance per unit length of 0.320 ?/km

Question

A high-voltage transmission line with a resistance per unit length of 0.320 ?/km carries a current of 960. A. The potential at the start of the line is 750. kV for a distance of 158 km.

(a) Calculate the power loss due to resistance in the line. (Please enter 3 significant figures.)
WebAssign will check your answer for the correct number of significant figures.

4.66E7 is the answer for A. I can't figure out part B

(b) Calculate the potential (voltage) at the end of the transmission line. (Please enter 3 significant figures.)
WebAssign will check your answer for the correct number of significant figures.

Explanation / Answer

157 km x 0.28 = 43.96 ohms power loss = i^2 R = 1030^2 x 42.96 = 45.6 MW this is very high Power of line = IV = 1030 x 700000 = 721 MW So the power loss represents 6.3 percent

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