1. A car, 5 km distance from a station, take 100 A over a 100 mm hard drawn copper trolley wire having a resistance of 0.270 ohm per km. The rail and ground return has a resistance of 0.06 ohm per km. If the station voltage is 750 V, what is the voltage of the car?
I would like to eliminate the arbitrary constant in this equation:
3. I tried differentiating with respect to x:
This is where i dunno what I will do next. I dunno know what the result of differentiating C with respect to x. I assumed it is...