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The resistance R(o) and R(t) of a metall...

The resistance `R_(o)` and `R_(t)` of a metallic wire at temperature `0^(@)C` and `t^(@)C` are related as (`alpha` is the temperature co-efficient of resistance).

A

`R_(t)=R_(o)(1+alpha t)`

B

`R_(t)=R_(o)(1-alpha t)`

C

`R_(t)=R_(o)(1+alpha t)^(2)`

D

`R_(t)=R_(o)(1-alpha t)^(2)`

Text Solution

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The correct Answer is:
A
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