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# Current Electricity: Resistance and Resistivity

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Stretch That Wire

A wire of initial length L0 and radius r0 has a measured resistance of 1.56 ohm. The wire is drawn under tensile stress to a new uniform radius of r = 0.420r0. What is the new resistance of the wire?

##### Solution Summary

A problem related to resistance and resistivity is solved and explained. The resistance of the new wire is determined.

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A wire of initial length L0 and radius r0 has a measured resistance of 1.56 ohm. The wire is drawn under tensile stress to a new uniform radius of r = 0.420r0. What is the new ...

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