Voltmeter - Practice Questions & MCQ

Voltmeter

It is a device used to measure Potential difference and is always put in parallel with the circuit element whose voltage is to be measured

Conversion of galvanometer into voltmeter:  by Connecting a large Resistance   in series. 

• The equivalent resistance of the combination is

• The required value of high resistance to be connected in series with the galvanometer is . V is the total voltage applied across the circuit and is the total voltage drop across the galvanometer.

• if part of the applied voltage across galvanometer, that is , then .