When a voltage measuring device is connected to ac mains, the meter shows the steady…
Physics · Class 12 · CBSE — Alternating Current
When a voltage measuring device is connected to ac mains, the meter shows the steady input voltage of 220 V. This means
- input voltage cannot be ac voltage, but a dc voltage.
- maximum input voltage is 220 V.
- the meter reads not V but <V2> and is calibrated to read \(\sqrt{
} .\) - the pointer of the meter is stuck by some mechanical defect.
Answer
(C) the meter reads not V but V 2 > and is calibrated to read .
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