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What is the voltage drop for 500 meters 1.0mm copper cable drawing 230ma with 24volt supply?
Wiki User
∙ 11y ago
The resistance of 1 mm (diameter) solid copper is about 21.8 ohms per kilometer.
That's 10.6 ohms in 500 meters.
When 230 mA flows through 10.6 ohms, the voltage drop is
I · R = (.230)x(10.6) = 2.438 volts.
The voltage of the supply is irrelevant.
Wiki User
∙ 11y ago
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