Power `P` is to be delivered to a device via transmission cables having resistance `R_(c)`. If `V` is the voltage across `R` and `I` the current through it , find the power wasted and how can it be reduced.

Power `P` is to be delivered to a device via transmission cables havin

1.	Power `P` is to be delivered to a device via transmission cables having resistance `R_(c)`. If `V` is the voltage across `R` and `I` the current through it , find the power wasted and how can it be reduced.
Answer» Power delivered, P = voltage `xx` current `=VI` or `I = P//V`. If `R_(c)` is the resistance of transmission line then power wasted, `P_(C) = l^(2)R_(C) = P^(2)/v^(2) R_(C)` In order to reduce `P__(C), V` should be large. Therefore the power should be transmitted at high voltage.

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Power `P` is to be delivered to a device via transmission cables having resistance `R_(c)`. If `V` is the voltage across `R` and `I` the current through it , find the power wasted and how can it be reduced.

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