Potentiometer method of dc voltage measurement is more accurate than direct measurement using a voltmeter because

[A].	it loads the circuit to maximum extent
[B].	it loads the circuit moderately
[C].	it does not load the circuit at all
[D].	it uses centre zero galvanometer instead of Voltmeters

Answer: Option C

Explanation:

Since the circuit is not loaded, the accurate value of dc voltage is measured.