Answer to Question #129616 in Electric Circuits for Godwill

Question

When electric power is to be transmitted over long distances, is it economical to use high
voltage and low current or low voltage and high current? Briefly explain your choice.

Answer 1

When power is to be transmitted over long distance, One should use High voltage and low current.

Reason:

Since the length of the wire increses so the resistance of wire increase,Therefore the current increses

Higher the value of current and resistance ,Higher will be the power dissipation P=$I^2R$ ,

So It is cheaper to ise High voltage and low current.