Question

An instrument has 5 division between 0 and 1 Ampere(A). The least count of instrument is​

Answer 1

Answer:

Least count is the smallest measurement that can be taken by a measuring instrument. In metrology, the least count of a measuring instrument is the smallest change in the measured quantity that can be resolved on the instruments scale.

Explanation:

Complete step by step answer:

The least count of a measuring instrument is the smallest and accurate value in the measured quantity that can be resolved on the instrument’s scale.

The least count is related to the precision of an instrument.

Basically, An Ammeter has a range of 0−3A and there 30 divisions on the ammeter

Range is basically the difference between maximum value to the minimum value.

So the range of ammeter =3-0= 3 A

Hence, Leastcountofammeter=RangeofammeterTotalnumberofdivisionontheammeterscale

=330=0.1A

For voltmeter, there are 20 divisions for a voltmeter between 0−0.5V marks. Means 0.5 volt is equal to 20 divisions.

So, the range of voltmeter=0.5-0=0.5V

Hence, Leastcountofvoltmeter=RangeofvoltmeterTotalnumberofdivisiononthevoltmeterscale

=0.520=0.025V

Therefore the least count of ammeter is 0.1A and least count of voltmeter is 0.02A