The resistance of a wire is R. After melting it is remoulded such that its area of cross-section becomes n times its initial area of cross-section, its new distance will be is a question from which book?
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Doubling the Area of a Conductor
Thus the resistance of the conductor is inversely proportional to its area, that is: R 1/∝ A, or R ∝ 1/A. In other words, we would expect the electrical resistance of a conductor (or wire) to be proportionally less the greater is its cross-sectional area.
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