How the resistance of alloy changes with change in temperature?

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Solution

The resistance R_t of a metal conductor or alloy at temperature t⁰C is given by the formula :
$R_{t} = R_{0} (1 + α t + β t^{2}) w h e r e α a n d β a r e t e m p e r a t u r e c o e f f i c i e n t s o f r e s i s \tan c e a n d R_{0} i s t h e r e s i s \tan c e o f a l l o y a t 0^{0} C .$

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