When a voltage measuring device is connected to a.c. mains the meter shows the steady input voltage of `220 V`. This meansA. input voltage can not be AC voltage, but a DC voltageB. maximum input voltage is 220 VC. the meter reads no `upsilon` but `lt upsilon^(2)gt` and is calibrated to read `sqrt(lt upsilon^(2)gt)`D. the pointer of meter is stuck by some mechanical defect

When a voltage measuring device is connected to a.c. mains the meter s

1.	When a voltage measuring device is connected to a.c. mains the meter shows the steady input voltage of `220 V`. This meansA. input voltage can not be AC voltage, but a DC voltageB. maximum input voltage is 220 VC. the meter reads no `upsilon` but `lt upsilon^(2)gt` and is calibrated to read `sqrt(lt upsilon^(2)gt)`D. the pointer of meter is stuck by some mechanical defect
Answer» Correct Answer - C The volmeter connected to A.C. mains is calibrated to read root mean square value or virtual value of a.c. voltage, i.e., `sqrt(lt upsilon^(2) gt)`. Choice ( c) is correct.

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