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  4. Variation of resistance of the conductor with temperature is as shown. Temperature coefficient of the conductor is <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-wjavs0f0kkpe.png />

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Q. Variation of resistance of the conductor with temperature is as shown. Temperature coefficient of the conductor is

Question

NTA AbhyasNTA Abhyas 2020Current Electricity

Solution:

$R_{t}=R_{0}\left(1 + \alpha \Delta t\right)$
Where $\alpha $ is temperature coefficient of conductor
$=R_{0}+R_{0}\alpha \Delta T$
Slope of graph $m=R_{0}\alpha $
$\therefore \alpha =\frac{m}{R_{0}}$
Solution