Find the least count of a milliammeter in which there are 20 divisions between 400mA and 500mA marks
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Least count of instrument is the smallest value it can measure.
Smaller the least count, greater the accuracy in its measurements.
Least count = Range/No. of divisions
if a ammeter from 400mA to 500mA, and it has 20divisions in total on the scale,
then its least count is 100mA/20
= 5mA
∴ Least count of milliammeter is 5 mA.
Smaller the least count, greater the accuracy in its measurements.
Least count = Range/No. of divisions
if a ammeter from 400mA to 500mA, and it has 20divisions in total on the scale,
then its least count is 100mA/20
= 5mA
∴ Least count of milliammeter is 5 mA.
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