A generator produces 60 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 Ω. Find the percentage power lost in the transmission line if the voltage is not stepped up.

Question

Quizplus · Accepted Answer

If the voltage is not stepped up, the power loss in the transmission line is calculated using P_loss = I^2 * R. With I = 60 A and R = 1 Ω, P_loss = 3600 W. The total power generated is P_total = V * I = 120 V * 60 A = 7200 W. The percentage power loss is (P_loss / P_total) * 100% = (3600 / 7200) * 100% = 50%.

A Generator Produces 60 a of Current at 120 V