Why is the voltage of the electricity produced by power stations is increased before its transmitted through the national grid?
Please help
Thanks
For a given power output, the higher
the voltage the lower the required current. A lower current results in lower power (I^2*R) loss. To deliver a
1000 Watts @ 100 volts requires 10 amps
of current(P = V*I). To deliver 1000 Watts @ 1000 volts requires only 1 Amp
of current.
When the voltage reaches its' destination, it is stepped down to the
required amplitude by transformers.