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Question

The least count of the ammeter shown below is :



(1) 0.05 A
(2) 0.5 A
(3) 0.1 A
(4) 1 A

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Solution

Least count of any scale is the value measured by a single division on it.

Total number of divisions on the scale = 30
The maximum value that can be measured = 1.5 A

Least count = 1.5 A30=0.05 A

Hence the correct answer is option 1.

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