If a metallic conductor of resistance R is cut into three equal parts, then the resistance of each part will become

Explanation

When a metallic conductor of resistance R is cut into three equal parts, the length of each part becomes one-third of the original length. Since resistance is directly proportional to the length of the conductor (R ∝ L), the resistance of each part becomes R/3. Option A is correct because it accurately represents the change in resistance. Option B is incorrect because it suggests no change in resistance. Option C is incorrect because it implies an increase in resistance, which doesn't occur in this scenario. Option D is incorrect and nonsensical in the context of how resistance behaves when a conductor is divided.