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why we step up voltage for reducing the loss, even if
voltage and current are proportional anr resistance remains
same
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Answer Posted / anon
Power is generated at the power stations, so after generating a given amount of power it's value is fixed and so
P = V*I is a constant.
Now if we Step-Up the voltage to say 10V (10 times), Now Power is fixed so Current Decreases 10 folds 0.1I
Now Line-Loss is I*I*R where R is the resistance of the Transmission Wire used. Since I decreases 10 times, I*I decreases 100 times.
So overall Transmission Losses decreases by 100 times if the Voltage wasn't Stepped-Up
Also thinner cable lines can be used to transmit the power since current value decreases also economical.
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