Question

If a voltmeter has a full-scale deflection of \(100\,\text{V}\) and the smallest division is \(0.5\,\text{V}\), its resolution is

• A. \(0.5\,\text{V}\)
• B. \(0.25\,\text{V}\)
• C. \(1\,\text{V}\)
• D. \(2\,\text{V}\)

Hint:

For analog instruments, \[ \boxed{ \text{Resolution}=\text{Value of the smallest scale division.} } \]

Answer 1

The Correct Option is A

Step 1: Recall the definition of resolution. Resolution is the smallest change in the measured quantity that an instrument can detect.

Step 2: Determine the resolution. Since the smallest scale division of the voltmeter is \[ 0.5\,\text{V}, \] its resolution is \[ \boxed{0.5\,\text{V}.} \] Therefore, \[ \boxed{(A)} \] is the correct answer.