Electrical energy supplied by a high voltage power has a total resistance of 4 ohms. At the input to the line the rms voltage is 400kV and the input power is 500MW
Calculate : A) the min voltage that the insulators which support the line must withstand without breakdwon
B) The value of rms current in the power line
C) the power loss in the power line
P=0.5IV (average power)
Peak I = 0.707 Irms
The Attempt at a Solution
Is it -400 kV? because I can't understand any other way it can be "minimum" without breakdown
B) I did P= IV and got 1250 Amps and if I use V=IR I get 100,000 Amps, since both current are ridiculously high, I doubt they are right.
C) P= I^2R?