Criterion For Choice Of Voltage For Transmission And Distribution.
We know that the power W =VI , so for the same power if voltage is increased then current will decrease. If suppose power required is 500 W and voltage is 250 V then current I will be equal to 500/250 =2A.
Now if voltage is increased from 250V to 500V and the power required is same then I = 500/500 =1 A
Now, if the voltage is still increased to say 1000V for the same power then I = 500/1000 =0.5 A
From the above examples, we see that if the voltage is doubled, the current...
