An ammeter has 20 divisions between mark 0 and mark 2 on its scale. Find the least count of the ammeter.
Least count is the smallest valve which we can measure on any device.
Given= Total number of divisions = 20
Divisions are between 0 and 2 mark
To calculate = least count of ammeter
Least count= range/ total number of divisions
= 2/20
Least count of ammeter = 0.1 A