The electrical resistance of a copper wire varies directly as it's length and inversely as...
The electrical resistance of a copper wire varies directly as it's length and inversely as...
The electrical resistance of a copper wire varies directly as it's length and inversely as the square of it's radius. If a copper wire 500 meters long and radius 0.2cm has a resistance of 30 ohms, calculate the resistance of the same type of copper wire 750 meters long and radius 0.25cm.?
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Asked by Teena on 30th December, 2020
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