Question

A 4½ digit digital voltmeter would display a reading of 0.6794 V in 10 V range as:

• A. 0.6790 V
• B. 00.679 V
• C. 0.6794 V
• D. 000.67 V

Hint:

In a 4½ digit meter, expect up to 19999 counts → precision up to 4 decimal places on a 10 V range.

Answer 1

The Correct Option is C

A 4½ digit display means:
- 4 full digits + 1 half digit (can show 0 or 1)
- For a 10 V range, it can show values from 0.0000 to 9.9999 (or up to 19.999 in special cases) So, 0.6794 V is well within the range and is displayed exactly as: \[ \boxed{0.6794 \ \text{V}} \]