Question

A 50 V reading in a 0 – 150 V range Voltmeter has an error of 1.25 V. Find the % error of full-scale reading.

• A. \( 0.833% \)
• B. \( 1.25% \)
• C. \( 3.75% \)
• D. \( 1.875% \)

Hint:

Always calculate % error based on full-scale value, not the measured reading.

Answer 1

The Correct Option is B

Percentage error with respect to full-scale = \[ \frac{\text{Error}}{\text{Full-scale value}} \times 100 = \frac{1.25}{100} \times 100 = 1.25% \]