A copper wire has a diameter of 0·2 mm and resistivity of 1·6 × 10⁻⁸ Ω m. What will be the length of this wire to make its resistance 14 Ω? How much does the resistance change, if the diameter of the wire is doubled?

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Factors Affecting Resistance of a Conductor, Electric Potential and Potential Difference, Ohm's Law, Electrical Resistance, Resistivity of Materials, Resistors in Series Combination | PadhAiPro

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TextFactors Affecting Resistance of a ConductorElectric Potential and Potential DifferenceOhm's LawElectrical ResistanceResistivity of MaterialsResistors in Series CombinationCBSE PYQ

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