Question
Distinguish between a potentiometer and a voltmeter.
| Potentiometer | Voltmeter | |
| 1. | The emf of a cell, potential difference, and internal resistance are all measured with a potentiometer. | A voltmeter can be used to determine a cell's potential difference and terminal voltage. However, it cannot be used to measure the emf of a cell. |
| 2. | It has a high level of accuracy and sensitivity. | Its accuracy and sensitivity are less as compared to a potentiometer. |
| 3. | It is not a portable instrument. | It is a portable instrument. |
| 4. | It does not give a direct reading. | It gives a direct reading. |
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