The voltage is stepped up at the beginning of transmission lines and step down again at the end of the latter.This This is , of course , to reduce the current passing through the line and thus reducing the heat losses. P\$P\$ loss = I^2 * R \$= I^2 \cdot R\$. but also this equation can be rewritten as p\$P\$ loss = V^2 * R \$= V^2 / R\$. So , if we raised the voltage difference across the whole transmission line we also will increase the losses , according to the second equation. I know this happens to be false. But, what is exactly wrong with that way of thinking ?!.
math typography, fixing an obvious typo, +[tag:heat], normal (non-South Asian) punctuation
Incnis Mrsi
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