a wire of Resistivity streached to 3times of its lenght what will be its new resistivity
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remains unchanged. Resistivity does not depend on length or area of cross-section. It just depends on the nature of the material of the wire.
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What will be its new resistivity? remains unchanged. Resistivity does not depend on length or area of cross-section. It just depends on the nature of the material of the wire.If The wire is stretched 3 times the original length, the cross-section of the wire is cut to 1/3rd it's the original cross-section. Since the resistance of a wire is given by R = rho*l/A the length while cutting the cross-section by 3x, the new resistance will be 9 times the original resistance.
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