Potentiometer
Class 11-12 Physics • EMF Measurement
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Potentiometer Lab
Measure EMF of cells using null point method. Slide jockey to find null point where galvanometer shows zero deflection.
3D Potentiometer
Select Cell to Measure
Jockey Control
Galvanometer
250 cm away
Calculation
E_primary = 2V
l = 500 cm
L = 1000 cm
E = (l/L) × E_primary
E = 1.000V