Question

Disadvantages of potentiometer over voltmeter

Answer 1

1) Potentiometer give the exact value of potential difference across any two points in a circuit because it never draws any current from the circuit. ... 2) Potentiometer can be used for measuring the internal resistance of a cell and also compare the e.m.f. of two cells , which cannot be done with aVoltmeter

Answer 2

Answer:

1. Potentiometer gives the exact value of potential difference across any two points in a circuit because it never draws any current from the circuit. 

2. Potentiometer can be used for measuring the internal resistance of a cell and also compare the e.m.f. of two cells, which cannot be done with a voltmeter.