Question

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 rms
• D. The pointer of the meter is stuck by some mechanical defect

Answer 1

Answer: (C)

The meter reads rms

When a voltage measuring device is connected to ac mains, the meter reads RMS value instead of peak or average value.

The correct option is C.