POTENTIOMETER EXPERIMENT/ K12 CBSE PHYSICS

POTENTIOMETER EXPERIMENT/K12 CBSE PHYSICS

COMPARISON OF EMF OF TWO CELLS:

EXPERIMENTAL SET UP :

CIRCUIT DIAGRAM:

CONDITIONS:

SIMPLE CIRCUIT DIAGRAM:

DOUBLE POLE DOUBLE THROW SWITCH CONNECTIONS :

POTENTIAL GRADIENT :

For better outcomes,utilize newly pre-arranged(freshly prepared) cell in any case, the polarization impact will happen which is segregating boundaries foster a connection point among cathode and electrolyte.

The sensitivity of the potentiometer relies upon a potential gradient (K).If the potential gradient is little  then the potentiometer is supposed to be more precise and delicate.

PROCEDURE:

This is the least complex circuit and every one of the connections are made as displayed previously. Connect the positive terminals of the

auxiliary battery and primary cells to point A of the potentiometer (zero point).

To actually look at the rightness(correctness) of the circuit,the pencil jockey is pressed close to the end A and B of the potentiometer.If  the galvanometer shows two side deflections then the circuit is correct,otherwise again actually look at the circuit connections.

Subsequent to confiming the twofold side deflections,the rheostat is changed at various positions.For every change of the rheostat the relating balancing lengths (Null deflections) for the two cells on the potentiometer wire are taken independently.

The noticed readings are to be entered in the tabular column.

TABULAR COLUMN & OBSERVATIONS:

CALCULATION & RESULT :

EMF VERIFICATION :