Electric power is transmitted over long distances through conducting wires at high voltage because
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(c) Power loss in transmission ${P_L} = \frac{{{P^2}R}}{{{V^2}}}$ $ \Rightarrow $ ${P_L} \propto \frac{1}{{{V^2}}}$
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Infinite number of cells having $emf$ and internal resistance $\left( {E,r} \right)$, $\left( {\frac{E}{n},\frac{r}{n}} \right)$, $\left( {\frac{E}{{{n^2}}},\frac{r}{{{n^2}}}} \right)$, $\left( {\frac{E}{{{n^3}}},\frac{r}{{{n^3}}}} \right)$..... are connected in series in same manner across an external resistance of $\frac{{nr}}{{n + 1}}$ . Current flowing through the external resistor is
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