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Question

Find The Least Count Of A Milliammeter In Which There Are 20 Divisions Between 500 mA and 600 mA Marks


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Solution

Step1: Given data

There are 20 divisions between 500mA and 600mA

Step2: Calculating the least count of milliammeter.

The value of each smallest division on a scale means the least count.

We can calculate the least count by dividing the main scale reading by the total number of divisions on the main scale.

Leastcount=rangeno.ofdivisions

No.ofdivisions=20

Range=600-500=100

So the least count = 10020=5mA

Thus each unit has a value of 5mA


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