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NEET2020PhysicsCurrent ElectricityActual

Which of the following graph represents the variation of resistivity ρ with temperature T for copper?

Correct answer

2

Step-by-step solution

For some metals like copper, resistivity is nearly proportional to temperature although a non linear region always exists at very low temperature. Relation between resistivity and temperature is given by ( = _ e^ -a T )

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