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  • When a voltage measuring device is connected to AC mains, the meter shows the steady input voltage of 220V. This means A. input voltage cannot be AC voltage, but a DC voltage.

When a voltage measuring device is connected to AC mains, the meter shows the steady input voltage of 220V. This means
A. input voltage cannot be AC voltage, but a DC voltage.
B. maximum input voltage is 220V.
C. the meter reads not v but <v2> and is calibrated to read \sqrt{< v^{2}> }
D. the pointer of the meter is stuck by some mechanical defect.

Answers (1)

The answer is the option (c)
This means that the voltage measuring device connected to AC mains is calibrated to read

the rms value \sqrt{< v^{2}> }

Posted by

infoexpert21

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