Question

An ammeter has a range of (0 - 3) amperes and there are 30 divisions on its scale. What is its
least count?

• A. 1.0 A
• B. 0.001 A
• C. 0.1 A
• D. 0.01 A

Answer 1

Answer: (C)

0.1 A

$\begin{array}{c}\text{Range of Ammeter}\left(R_A\right)=3\\ \text{no. of divisions}\left(N_D\right)=30\\ \text{We Know that,}\\ \text{Least count}=\frac{\text{Range of ammeter}}{\text{no. of divisions}}\\ =\frac{3}{30}=\frac{1}{10}\\ =0.1A\end{array}$