Assertion: Long distance power transmission i | vedclass

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(A) The power transmitted is given by $P = VI$,where $V$ is the voltage and $I$ is the current.Thus,the current $I = P/V$.The power loss in the transm

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

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(A) The power transmitted is given by $P = VI$,where $V$ is the voltage and $I$ is the current.Thus,the current $I = P/V$.The power loss in the transmission lines due to resistance $R$ is given by $P_{loss} = I^2 R$.Substituting the value of $I$,we get $P_{loss} = (P/V)^2 R = (P^2 / V^2) R$.From this equation,it is clear that for a constant power $P$ and resistance $R$,the power loss $P_{loss}$ is inversely proportional to the square of the voltage $(P_{loss} \propto 1/V^2)$.Therefore,by increasing the voltage $V$,the power loss during transmission is significantly reduced.Hence,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.