Rationalised 2023-24
131
Moving Charges and
Magnetism
The galvanometer can also be used as a voltmeter to measure the
voltage across a given section of the circuit For this it must be connected
in parallel with that section of the circuit Further, it must draw a very
small current, otherwise the voltage measurement will disturb the original
set up by an amount which is very large Usually we like to keep the
disturbance due to the measuring device below one per cent