Question

Which physical quantity cannot be determined with the help of potentiometer?

• A. I
• B. V
• C. L
• D. R

Answer 1

The correct option is C L

Potentiometer is a simple device used to measure the EMF, internal resistance of a cell. It consists of a board where a tungsten or manganese wire is fitted on it. It works on the principle that the potential dropped between two points in a wire of uniform cross section is directly proportional to the distance between the points. It can not measure the inductance L .