# What is least count of voltmeter? In a voltmeter there are 20 divisions between the ‘0’ mark and 0.5 V mark. Calculate its least count.

Two given marks of the $$voltmeters = 0 and 0.5 V$$
$$Potential difference = 0.5 – 0 = 0.5V$$
$$No. of divisions between these two marks = 20$$ $$\implies frac{0.5}{20}$$ $$\implies least count = 0.024$$