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A silver wire has a resistance of 2.1Ome...

A silver wire has a resistance of `2.1Omega` at `27.5^(@)C&2.7Omega` at `100^(@)C` Determine the temperature coefficient of resistivity of silver.

Text Solution

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`R_(1)=R_(0)(1+alphatheta)`
`2.1=R_(0)(1+alphaxx27.5)` ….(1)
`2.7=R_(0)(1+alphaxx100)` ….(2)
Solve equation (1) and (2) `alpha=0.0039^(@)C^(-1)`
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