The sensitivity of a potentiometer can be increased by _.
Correct answer: C. Increasing the length of the potentiometer wire
- A. Increasing the e.m.f. of the primary cell
- B. Increasing the potential gradient
- C. Increasing the length of the potentiometer wire
- D. Decreasing the length of the potentiometer wire
Explanation
A potentiometer's accuracy (sensitivity) is inversely dependent upon the potential gradient. The smaller the gradient, the higher the sensitivity. The potential gradient can be reduced by increasing the length of the potentiometer wire. Thus a longer potentiometer wire, means a more sensitive potentiometer.
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