Q. 274.5( 4 Votes )

An ammeter has 20

Answer :

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

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