JEE Main 2024 Physics question
Wheatstone bridge principal is used to measure of specific resistance (S₁) of given wire, having length L, radius r. If X is the resistance of wire, then specific resistance is ; . If the length of the wire gets doubled, then the value of specific resistance will be
Answer: (A)
Solution
Specific resistance (resistivity) is a property of the material and does not depend on the dimensions of the wire, so it remains S₁.