NEET Physics Ohm's Law MCQ Question with Solution

Consider a conductor with length doubled and cross-sectional area halved. According to Ohm's Law, how will the resistance change?

A

Resistance will be quadrupled.

B

Resistance will be halved.

C

Resistance will remain unchanged.

D

Resistance will be doubled.

Correct Answer

Option A

Detailed Explanation

According to Ohm's Law and the relation R ∝ l/A, doubling the length and halving the cross-sectional area results in resistance becoming four times the original.

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