Principle of potentiometer...........
Answers
The potentiometer difference between any two points of the potentiometer wire is directly proportional to the length of wire between two points..
______________or_____________
the fall of potential pee unit length of potentiometer wire is constant
Answer:
A potentiometer is an instrument for measuring voltage or 'potential difference' by comparison of an unknown voltage with a known reference voltage. If a sensitive indicating instrument is used, very little current is drawn from the source of the unknown voltage. Since the reference voltage can be produced from an accurately calibrated voltage divider, a potentiometer can provide high precision in measurement. The method was described by Johann Christian Poggendorff around 1841 and became a standard laboratory measuring technique.