TO COMPARE THE EMF OF TWO GIVEN CELLS USING POTENTIOMETER. (OM-12004)

APPATRATUS WE SUPPLIED

1. 4-POTENTIOMETER
2. DANIERL CELL (SUBSTITUTE)
3. BATTERY ELIMINATOR
4. LECHLENCHE CELL (SUBSTITUTE)
5. GALVANOMETER
6. AMMETER (1A)
7. RHEOSTAT (20 OHMS,4.6 A)
8. RESISTANCE BOX (10,000 OHM)
9. ONE WAY KEY -1
10. TWO WAY KEY-1
11. DCC WIRE (100GM)                                                                                                                                                                                                                                                                                                                           To compare the electromotive force (EMF) of two primary cells using a potentiometer, the experiment relies on the principle that the potential drop across a uniform wire is directly proportional to its length when a constant current flows through it.