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A negligible small current is pass throu...

A negligible small current is pass through a wire of length 15m and uniform cross section `6xx10^(-7)m^(2)` and its resistance is measured to be `5Omega`. What is the resistivity of the material at the temperature of the experiment ?

Text Solution

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Given `R=5 Omega, A=6xx10^(-7)m^(2), l=15m`
`:.` Resistance of the wire `R=(rhol)/(A)`
`rho=(RA)/(l)=(5xx6xx10^(-7))/(15)`
`rho=2xx10^(-7) Omega m`
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