The resistance of pure metals ___________(a) Increases with an increase in temperature(b) Decreases with an increase in temperature(c) Remains the same with an increase in temperature(d) Becomes zero with an increase in temperatureThis question was addressed to me in class test.My question is from Temperature Coefficient of Resistance topic in division Simple DC Networks of Basic Electrical Engineering

The resistance of pure metals ___________(a) Increases with an increas

1.	The resistance of pure metals ___________(a) Increases with an increase in temperature(b) Decreases with an increase in temperature(c) Remains the same with an increase in temperature(d) Becomes zero with an increase in temperatureThis question was addressed to me in class test.My question is from Temperature Coefficient of Resistance topic in division Simple DC Networks of Basic Electrical Engineering
Answer» Correct option is (a) INCREASES with an increase in temperature Easiest explanation: In a conductor, the valence BAND and conduction band overlap each other, there is an excess of ELECTRONS in the conduction band. When the temperature increases, there is an overcrowding of electrons in the conduction band hence reducing the mobility and hence resistance increases.

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