EXPERIMENT NO.
AIM: Verification of Kirchhoffs Current Law
experimentally.
INSTRUMENTS:
S.No. NAME TYPE RANGE QUANTITY
Ammeter MC 0-10A
2
Ammeter MC 0-5A
Rheostat Single tube 452,5A
THEORY: Kirchhoff's Current Law is applicable at a node of the network, where two or more
than two branches are
meeting together. This law states that in any electrical network, the
algebraic sum of current in all the branches meeting at a node is zero. i.e. the sum of the current
flowing toward a node is equal to the sum of the current flowing away from that node.
CIRCUIT DIAGRAM:
Fuse
(-103A
MC
MC MC
Fuse
PROCEDURE:
1. Connect the circuit as per given Figure
2. Adjust the position of all the rheostats in the cireuit, so that each of these
offer maximum
resistance in the beginning.
3. Switch on the de supply.
4. Note down the reading of all the ammeters in the circuit.
5. Change the resistance in the branches, so as to get a different set
of readings. Take down
the readings of the entire ammeters.
6. Repeat step(s) for different setting of rheostat.
7. Switch-off the de supply.
OBSERVATION:
S.No. Ai A2 A3 AztA3 %ERROR
CALCULATION:
%Error =4r42tA3
A1
RESULT: Kirchhoffs current law is experimentally verified.
