Q. The potentiometer is superior to a voltmeter for measuring a potential difference because
A) The resistance of the voltmeter
B) The potentiometer does not draw any current from the source of the potential
C) The sensitivity of potentiometer is better than that of the voltmeter
D) The voltmeter has a dial and of small size
Explanation
(b) Potentiometer is based on null deflection
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.