1.

An ammeter has a range (0 - 3A) and there are 30 divisions on its scale. Calculate the least count of the ammeter.

Answer»

Solution :Here, range of ammeter = 3 ampere
(Le., The MAXIMUM CURRENT that can be MEASURED by the given ammeter is 3A.)
No. of divisions on scale of ammeter = 30
The least count of the ammeter
`= ("Range of the ammeter")/("Total no.of divisions")`
`=(3A)/(30) = 0.1 A`
(Le., MINIMUM current that can be accurately measured by a given ammeter is 0.1 A.)


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