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A d.c. voltmeter has a sensitivity of 1000 ohm/volt. When it measures half full scale in 100 V range, the current through the voltmeter is:
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- 100 mA
- 1 mA
- 0·5 mA
- 50 mA
- 100 mA
Correct Option: C
Given Sensitivity = 1000 ohm/volt
Range = 0 – 100V
The term sensitivity and full scale deflection (fsd) current is given by relation
| s = | |
| Ifsd |
or
| Ifsd = | |
| S |
| = | |
| 1000 |
Since, it measure half of the full scale.
So, the current through the voltmeter is 0·5mA.
