I've read on a number of places that, since P=I^2*R, the lower the current the lower the power losses will be, so transmission lines carry low current, high voltage. But Power can also be written as P=V^2/R, so if we want to avoid losses, voltage also needs to be down, not just current. The way I understand it, it doesn't matter which quantity you step up and which you step down, because power is compensated by the reciprocal effect current and voltage have upon each other.
I've always been confused by this. I'll be really grateful for your illuminating response.
Thank you!
I've always been confused by this. I'll be really grateful for your illuminating response.
Thank you!