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(a) What is least count of voltmeter ? ...

(a) What is least count of voltmeter ?
(b) In a voltmeter there are 20 divisions between the '0' mark and 0.5 V mark. Calculate its least count.

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### Step-by-Step Solution: **(a)** The least count of a voltmeter is defined as the minimum potential difference that can be measured between two given terminals of the voltmeter. **(b)** To calculate the least count of the voltmeter given that there are 20 divisions between the '0' mark and the 0.5 V mark, follow these steps: 1. **Identify the Initial and Final Readings:** - Initial Reading (0 mark) = 0 V ...
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