Which of the following graph represents the variation of resistivity ($\rho$) with temperature ($T$) for copper?

A -

B -

C -

D -

The answer is B.

Solution

For a metal like copper, resistivity increases with temperature; at low temperatures (much below 0 °C) the graph deviates considerably from a straight line, rising non-linearly.

Concept resistivity vs temperature graph for a metal

Temperature Dependence of Resistivity in past papers

3 questions from this chapter have appeared across 2 exam years.

2020 2 questions
2001 1 question

Which of the following graph represents the variation of resistivity ($\rho$) with temperature ($T$) for copper?

Solution

Temperature Dependence of Resistivity in past papers

Practice

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