PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
At an electric sub-station, an ideal transformer feeds 11kW of power from a 220V distribution line into a transmission line at 11kV.
(i) Determine the current in the high-voltage transmission line.
(ii) Briefly explain how transmitting power at this higher voltage helps to reduce resistive power losses in the line.