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

CONCEPT:

Resistivity: Resistivity is defined as the property of the material that is used to resist the electric current known as resistivity. It is written as;

\(\rho = \frac{{m}}{n{e^2}\tau}\)

\(\tau\) is the relaxation time, \(\rho \) is resistivity, m is the mass. 

EXPLANATION:

As we have resistivity, \(\rho = \frac{{m}}{n{e^2}\tau}\)

When the temperature increases the relaxation time will decrease, therefore resistivity will increase. So, the variation of resistivity and temperature are parabolic.

Hence, option 1) is the correct answer.