Current Electricity Ques 1
1. Which of the following graph represents the variation of resistivity $(\rho)$ with temperature $(\mathrm{T})$ for copper?
[2020]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 1.(b)
Solution: (b) For metals like copper, at temperature much lower than $0^{\circ} \mathrm{C}$, graph deviates considerably from a straight line.
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