Least Count of a voltmeter can vary based on its design and intended application. Common values include 0.1 volts (V), 0.01 V, or even 0.001 V.

It is a crucial specification that determines the smallest voltage difference it can accurately measure. It represents the precision of the instrument in reading electrical potential differences.

• Higher Precision: Voltmeters designed for laboratory or industrial use tend to have smaller Least Counts, such as 0.01 V, enabling more accurate voltage measurements.
• Ease of Use: A smaller Least Count allows for finer adjustments and more precise readings. However, it’s essential to choose a voltmeter with an appropriate Least Count for the specific voltage range you intend to measure.
• Digital Voltmeters: Digital voltmeters often have adjustable resolutions, which means their Least Count can be set to different values based on the required level of accuracy.

In summary, the Least Count of a voltmeter indicates its ability to measure voltage differences accurately. Choosing the right voltmeter with an appropriate Least Count is crucial for obtaining reliable electrical voltage measurements.