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goWlfpack
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Homework Statement
A high-voltage transmission line with a resistance of 0.28 /km carries a current of 990 A. The line is at a potential of 740 kV at the power station and carries the current to a city located 162 km from the station.
(a) What is the power loss due to resistance in the line?
W
(b) What fraction of the transmitted power does this loss represent?
%
Homework Equations
Power= change in V^2/R
where v is potential difference and R is resistance
Power = I^2*R
where I is current
The Attempt at a Solution
I got part a correct. I used the equation p=I^2*R and got 44457336
I can't figure out how to get the second part though
I tried using p=v^2/R with 740,000 as the V and .28(162) as the R to no avail
any suggestions?