NEET Physics Resistance & Resistivity Assertion Reason Question
Assertion (A): Metals have a low resistivity compared to insulators. | Reason (R): The carriers of current in metals are positive and negative ions.
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.
Correct Answer
Detailed Explanation
Metals have low resistivity, ranging from 10^-8 Ωm to 10^-6 Ωm, due to the free electrons that act as current carriers, not ions.
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