NEET Physics Resistance & Resistivity Assertion Reason Question
Assertion (A): The resistivity of metals increases with an increase in temperature.
Reason (R): In metals, the average time between electron collisions decreases with an increase in temperature.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
The resistivity of metals increases with temperature because the average time between electron collisions decreases, leading to more frequent collisions.
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