Specific resistance of a conductor increases with (a) increase in temperature (b) increase in cross-section area (c) increase in cross-section and decrease in length (d) decrease in cross secton area.

Answer: (a). Specific resistance (resistivity) depends only on the material and its temperature, not on length or area. For a conductor ρT = ρ₀(1 + α Δ T) with α > 0, so ρ rises with temperature. So the answer is (a) increase in temperature.

Specific resistance of a conductor increases with | NEET 2002 (AIPMT)

Q72NEET 2002 · AIPMTEasy

Ohm's Law, Resistivity & Temperature

Specific resistance of a conductor increases with

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Answer: (a)

Specific resistance (resistivity) depends only on the material and its temperature, not on length or area.
For a conductor $\rho_T = \rho_0(1 + \alpha \Delta T)$ with $\alpha > 0$ , so $\rho$ rises with temperature.
So the answer is (a) increase in temperature.

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