A Copper Wire Has a Diameter of 0.5 mm and Resistivity of 1.6 X 10-8 Ωm. What Will Be the Length of This Wire to Make Its Resistance 10 Ω? How Much Does the Resistance Change if the Diameter is Doubled?
Given that A copper wire has a diameter of 0.5mm and resistivity of 1.6 x 10-8 Ωm. The length of this wire to make its resistance 10 Ω is 122.7 m. Therefore the resistance change if the diameter is doubled is 2.5 Ω
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