Question

The least count of the voltmeter shown below is:



(1) 0.1 V
(2) 0.01 V
(3) 0.02 V
(4) 0.2 V

Answer 1

The least count of any device is given by the value measured by one single division on the scale of the device.

Total number of divisions on the scale = 15

Least count = $\frac{3\text{V}}{15}=0.2\text{V}$

Hence, the correct answer is option 4.