DRAW A CIRCUIT DIAGRAM OF A POTENTIOMETER

write the principle of working of a potentiometer describe
The potentiometer works without drawing any current from the voltage source. We can also use a potentiometer to measure internal resistance of a cell. For this the cell (emf E) whose internal resistance (r) is to be determined is connected across a resistance box through a
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Important Questions for CBSE Class 12 Physics
Dec 04, 2015The circuit diagram of potentiometer for determining internal resistance of a given cell is shown Measurment of Internal Resistance of a Cell Using Potentiometer 27 cells of emf E x , E 2 and internal resistances r a and r 2 respectively are connected in parallel as shown in the figure.
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