A rectifier type AC voltmeter consists of a series resistance R, an ideal full-wave rectifier bridge and a PMMC instrument. A DC current of 1 mA produces a full-scale deflection of the instrument. The resistance of the instrument is 100 . A voltage of 100 V (rms) is applied to the input terminals. The value of R required is?

A rectifier type AC voltmeter consists of a series resistance R, an id

1.	A rectifier type AC voltmeter consists of a series resistance R, an ideal full-wave rectifier bridge and a PMMC instrument. A DC current of 1 mA produces a full-scale deflection of the instrument. The resistance of the instrument is 100 . A voltage of 100 V (rms) is applied to the input terminals. The value of R required is?
A.	63.56
B.	89.83
C.	89.83 k
D.	141.3 k
Answer» D. 141.3 k