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 :
(c) the meter reads not V but \[<{{V}^{2}}>\] and is calibrated to read \[\sqrt{<{{V}^{2}}>}\] The voltmeter connected to AC mains is calibrated to read root mean square value or virtual value of AC voltage.
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