For a full wave rectification, in a low voltage ac voltmeter, the meter current can be expressed as
(a) Io = (1.9×Vin)/R1
(b) Io = (3.9×Vin)/R1
(c) Io = (0.9×Vin)/R1
(d) Io = (2.9×Vin)/R1
The question was posed to me by my college professor while I was bunking the class.
This is a very interesting question from Current to Voltage Converter in portion Operational Amplifier Applications of Linear Integrated Circuits