physics
posted by lynette on .
A highvoltage transmission line with a resistance of 0.28 /km carries a current of 1030 A. The line is at a potential of 720 kV at the power station and carries the current to a city located 165 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?
____________%

R=.28*165 (calc this) plug into following equation and that will give you W
=I^2*R
=1030^2*R
b. P(loss)= IV
=1030(720000) <changed into V from kv
=741400000
divide answer from part a by this number to get the percentage