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Physics

Temperature Dependence of Resistivity

तापमान पर प्रतिरोधकता की निर्भरता

In Class 12 Physics, this topic from Chapter 3: Current Electricity explains how a material’s resistivity changes when its temperature changes. Students study the approximately linear relation for metals, ρ = ρ₀[1 + α(T − T₀)], and interpret the temperature coefficient of resistivity. They also compare the behaviour of metals, alloys, semiconductors, and insulators, connect resistivity with resistance and conductivity, and understand practical uses such as resistance thermometers and temperature-sensitive circuits.

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