Electric power is transmitted over long dista | vedclass

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(C) The power loss $(P_L)$ in transmission lines is given by the formula $P_L = I^2 R$,where $I$ is the current and $R$ is the resistance of the wire.

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Power loss is less

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(C) The power loss $(P_L)$ in transmission lines is given by the formula $P_L = I^2 R$,where $I$ is the current and $R$ is the resistance of the wire.Since the power transmitted is $P = VI$,we can write $I = P/V$.Substituting this into the power loss formula,we get $P_L = (P/V)^2 R = \frac{P^2 R}{V^2}$.From this expression,it is clear that $P_L \propto \frac{1}{V^2}$.Therefore,by increasing the transmission voltage $(V)$,the power loss $(P_L)$ is significantly reduced.

Electric power is transmitted over long distances through conducting wires at high voltage because

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