Question

Explain, why electric power transmitted at high voltages and low currents to distant places?

Answer 1

$\huge \boxed{ANSWER}$

Wire resistance causes loses in electric power transmission. If you keep resistance constant, losses are directly proportional to voltage and the square of the current.

If you double the voltage, for the same power the current is halved and power dissipation is effectively halved for the same power.

Another reason is that cable required for transmitting low currents has less cross-sectional area and are lighter. So, it is less expensive than heavier cable. Also, the number of towers required a certain distance is also reduced.

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Answer 2

Wire resistance causes loses in electric power transmission. If you keep resistance constant, losses are directly proportional to voltage and the square of the current.

If you double the voltage, for the same power the current is halved and power dissipation is effectively halved for the same power.

Another reason is that cable required for transmitting low currents has less cross-sectional area and are lighter. So,it is less expensive than heavier cable. Also, the number of towers required a certain distance is also reduced.