A) input voltage cannot be AC voltage, but a DC voltage.
B) maximum input voltage is 220 V
C) The meter reads not v but (\[{{v}^{2}}\]) and is calibrated to read \[\sqrt{({{v}^{2}})}\].
D) The pointer of the meter is stuck by some mechanical defect.
Correct Answer: C
Solution :
| Option [c] is correct |
| Explanation: The voltmeter in AC circuit reads value <\[{{v}^{2}}\]> and meter is calibrated to rms value <\[{{v}^{2}}\]> which is multiplied by \[\sqrt{2}\] to get \[{{V}_{rm{{s}^{.}}}}\]In other words, voltmeter connected to the AC main read root mean square value of AC voltage, i.e., \[\sqrt{<{{v}^{2}}>}\]. |
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