Assertion: Long distance power transmission i | vedclass

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(A) The power transmitted through a line is given by $P = VI$, where $V$ is the voltage and $I$ is the current.The power loss in the transmission line

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If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) The power transmitted through a line is given by $P = VI$, where $V$ is the voltage and $I$ is the current.The power loss in the transmission line due to resistance $R$ is given by $P_{	ext{loss}} = I^2R$.Substituting $I = \frac{P}{V}$, we get $P_{	ext{loss}} = (\frac{P}{V})^2 R = \frac{P^2 R}{V^2}$.From this expression, it is clear that $P_{	ext{loss}} \propto \frac{1}{V^2}$.Therefore, by increasing the voltage $V$, the power loss $P_{	ext{loss}}$ decreases significantly.Thus, both the Assertion and the Reason are correct, and the Reason is the correct explanation of the Assertion.

Assertion: Long distance power transmission is done at high voltage.
Reason: At high voltage supply, power losses are less.

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Assertion: Long distance power transmission is done at high voltage.Reason: At high voltage supply, power losses are less.