BANSAL INSTITUTE OF SCIENCE AND TECHNOLOGY
BHOPAL
Department of Basic Science
EXPERIMENT NO.:01 (A)
AIM: To verify Kirchhoff’s Current Law.
APPARATUS REQUIRED:
1. KCL Trainer Kit
2. Patch Cords
3. Digital Multimeters
THEORY:
Kirchhoff’s Current Law: According to KCL, “The algebraic sum of the various current meeting
at a node is zero”
ΣI=0
Or
“Current entering the node should be equal to current leaving the node”.
At any node,
Σ I entering = Σ I leaving
Fig. 1
PROCEDURE:
1. Connect the ammeter across point C & D to find out current I 1.
2. Again connecting the ammeter across point G & H to find out current I 2.
3. To find out the whole current i.e. I flowing through the main circuit by connecting the
ammeter across points X & Y as shown in fig. 2. Hence by Kirchhoff’s current law.
I= I1+I2
BT-104 Basic Electrical & Electronics Engineering
BANSAL INSTITUTE OF SCIENCE AND TECHNOLOGY
BHOPAL
Department of Basic Science
CIRCUIT DIAGRAM:
Fig. 2
OBSERVATION TABLE:
S. No. Vs I1 I2 I I1+ I2
CALCULATION:
By Kirchhoff’s Current Law:
I = I1+I2
RESULT:……………………………………………………………………………………………
……………………………………………………………………………………………………….
PRECAUTIONS:
1. There should not be loose and wrong connection in the circuit.
2. Before making or breaking the circuit, supply must be switched off.
BT-104 Basic Electrical & Electronics Engineering
BANSAL INSTITUTE OF SCIENCE AND TECHNOLOGY
BHOPAL
Department of Basic Science
VIVA QUESTIONS:
Q.1.Define the term current.
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Q.2.What is a node?
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Q.3.Define Ohm’s law.
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Q.4.State Kirchhoff’s current law.
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Q.5.What are ideal and practical current sources?
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BT-104 Basic Electrical & Electronics Engineering
BANSAL INSTITUTE OF SCIENCE AND TECHNOLOGY
BHOPAL
Department of Basic Science
EXPERIMENT NO.:01 (B)
AIM: To verify Kirchhoff’s Voltage Law.
APPARATUS REQUIRED:
1. KVL Trainer Kit
2. Patch Cords
3. Digital Multimeters
THEORY:
Kirchhoff’s Voltage Law: According to KVL, “the algebraic sum of all the voltages around any
closed path should be equal to zero”.
ΣV=0
Or
“In any closed path the total voltage rise should be equal to total voltage drop”.
Σ Voltage rise = Σ Voltage drop
CIRCUIT DIAGRAM:
Fig. 1
PROCEDURE:
1. Connect the voltmeters as per diagram.
2. Connect supply to input terminals.
3. Switch ON the power supply.
BT-104 Basic Electrical & Electronics Engineering
BANSAL INSTITUTE OF SCIENCE AND TECHNOLOGY
BHOPAL
Department of Basic Science
OBSERVATION TABLE:
S. No. Vs (Volts) V1 (Volts) V2 (Volts) V = V1+ V2 (Volts)
1
2
3
4
5
CALCULATION:
According Kirchhoff’s Voltage Law,
V = V 1 + V2
RESULT:……………………………………………………………………………………………
……………………………………………………………………………………………………….
PRECAUTIONS:
1. There should not be loose and wrong connection in the circuit.
2. All the voltage drops across each resistor should be taken carefully.
3. Before making or breaking the circuit, supply must be switched off.
BT-104 Basic Electrical & Electronics Engineering
BANSAL INSTITUTE OF SCIENCE AND TECHNOLOGY
BHOPAL
Department of Basic Science
VIVA QUESTIONS:
Q.1.Define the term voltage.
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Q.2. What is mesh?
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Q.3.What are types of network?
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Q.4.State Kirchhoff’s voltage law.
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Q.5.What are ideal and practical voltage sources?
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BT-104 Basic Electrical & Electronics Engineering
