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Physics 21 Online
OpenStudy (anonymous):

a wire of resistance 4 ohm is stretched to twice its original length. what is the resistance of wire now?

OpenStudy (anonymous):

\[R=\rho*\frac{ L }{ A }\] You can use this. Where; rho= electrical resistivity L= Length of the conductor. A=Cros-section of the conductor.

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