High voltage transmission line
Step-down transformer
Step-down (substation) transformer
Power plant
Step-up transformer
Home
12,000 V
240,000 V
7,200 V
240 V
Part A
For the transmission of electric power from the power plant to the home as depicted in the figure above, where the electric power sent by the plant is 100 kW at 12,000 V, about how far away could the house be from the power plant before power loss occurs? Assume the total resistance of the transmission line per unit length is 4x10^(-9) Ω/m (the value takes into account all the wires of the transmission line). Express your answer to one significant figure and include the appropriate units.
d =
Value
Units