Sensitivity of potentiometer can be increased by

Options

A. increasing the emf of the cell
B. increasing the length of the potentometer
C. decreasing the length of the potentiometer wire
D. none of the above

Explanation

To solve the question regarding how to increase the sensitivity of a potentiometer, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Sensitivity**: Sensitivity of a potentiometer is defined as its ability to detect small changes in voltage. It indicates how effectively the potentiometer can measure voltage differences.

2. **Relationship with Length**: The sensitivity of a potentiometer wire is directly proportional to its length. This means that as the length of the potentiometer wire increases, its sensitivity also increases.

3. **Increasing Length**: To enhance the sensitivity of the potentiometer, we can increase the length of the potentiometer wire. A longer wire allows for a more precise measurement of voltage differences.

4. **Conclusion**: Therefore, to increase the sensitivity of a potentiometer, we should increase the length of the potentiometer wire. This leads us to the conclusion that the correct option is to increase the length of the potentiometer.

### Final Answer:
The sensitivity of a potentiometer can be increased by increasing the length of the potentiometer wire.

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