Physics, 18.07.2021 23:10, carealee

Please help me, i'm desperate with this exercise 1) Consider an electric power transmission line that carries a constant electric current of i = 500 A. The cylindrical copper cable used to transmit this current has a diameter o = 2.00 cm and a length L = 150 km. If there are 8.43x10^28 free electrons per cubic meter (m^3 ) in the cable, calculate how long it would take for an electron to cross the entire length of the transmitter line.

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Please help me, i'm desperate with this exercise 1) Consider an electric power transmission line th...