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3. What will be the resistance of 1000 m long copper wire of radius 1 mm, if the resistivity of copper is 1.72 x 10-22 m ?follow me |
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Answer» Answer: LENGTH=1 km=1000m Radius=1 mm=1*10⁻³ m Resistivity of copper=1.72x10⁻⁸ Resistance=(Resistivity of copper * Length)/(Area) =(Resistivity of copper * Length)/(r²) Resistance=[1.72*10⁻⁸*1000]/[22/7*(1*10⁻³)² Resistance=5.5 OHM Hope it helps . I'll follow u , if you MARK me as BRAINLIEST and follow me back . 1st do these I'll SURE follow you . |
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