Potentiometer sensitivity can be increased by
- A. Decreasing current in the potentiometer wire
- B. Increasing the length of the potentiometer wire
- C. Decreasing the length of the potentiometer wire
- D. Replacing the cell by a regulated power supply
Answer: B. Increasing the length of the potentiometer wire
Explanation: Potentiometer sensitivity S = 1/k where potential gradient k = V/L. Increasing slide wire length L decreases the voltage gradient per unit length, allowing finer voltage resolution and higher sensitivity.