Potentiometer is used to determine the internal resistance of a cell using potentlometer:- A potentiometer is a device for ________.

Using a potentiometer how do you determine the internal resistance of a cell?

With the help of a circuit diagram describe the method to find the internal resistance of a cell using potentiometer.

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery used across the potentiometer wire, has an emf of 2V and negligible internal resistance. The potentiometer itself is 4m long. When the resistance 'R_(1)' , connected across the given cell has values of (i) infinity (ii) 9.5Omega , the balancing length on the potentiometer wire are found to be 3m and 2.85m respectively. The value of internal resistance of the cell is

Which device is used to measure the relative density of a liquid?