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what is length of copper wire 1/16 in . in a diameter is required to construct...

what is length of copper wire 1/16 in . in a diameter is required to construct a 20-omego resistor at 20 degree C? What length of nichrome wire is needed?

Copper: p=1.78x10^-8 omega/m

nichrome: p=100x10^-8 omega/m

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