1) The document describes an experiment to verify Thevenin's theorem, which states that a linear two-terminal circuit can be represented by an equivalent circuit with a voltage source Vth and resistor Rth. 2) The experiment used a DC power supply, resistors, wires, a voltmeter, and ammeter to construct the circuit and measure voltages and currents. 3) Calculations showed that Vth = 3.4V, Rth = 113Ω, Io = 10mA, IL' = 10.2mA with an error of 1.96% between the actual and equivalent currents, verifying Thevenin's theorem.

1. ElectricalCircuitLab– 5
Name ofExperiment: Verificationof Thevenin’s Theorem.
Student Name: Md. Mohiuddin Murad
ID : 2015-2-55-027
Section : 01
Course Title : Electrical Circuit 1
Course Code : ETE107
SubmittedTo :
Dr. M. MofazzalHossain
Submission Date :08-03-2016

2. Name of Experiment: Verification of Thevenin’s Theorem.
Objective:
The experiment is to know about the verification of Thevenin’s theorem.
Thevenin’s theorem states that a linear two terminal circuit can be
replaced by an equivalent circuit .
Equipment and Accessories:
1. DC power supply
2. Resistors
3. Wire
4. Voltmeter
5. Ammeter

3. Circuit Diagram:
Figure:1
+
RL
220
A
R3
223
-
5v
R2
54
R1
98
b
Vth
R3
223
a
5v
R2
54
R1
98

4. Figure:2
Figure:3
A
5v
R3
223
-
R2
54
+
R1
98
RL
220
Vth 3.4 v
Rth
113

5. Figure:4
Experimental Data:
The values of resistor
𝑅1 Ω 𝑅2 Ω 𝑅3 Ω 𝑅 𝐿 Ω
98 54 223 220
Here ,
𝑰 𝑳 = 10 mA
Vth= 3.4 v
𝑰 𝟎 = 44 mA
Now,
𝑹 𝒕𝒉 =
𝑽
𝑰 𝟎
=
𝟓
𝟒𝟒×𝟏𝟎−𝟑 = 113 Ω
We know ,
𝑰 𝑳΄ =
𝑽
𝑹𝒕𝒉+𝑹𝑳
=
𝟑.𝟒
𝟏𝟏𝟑+𝟐𝟐𝟎
= 10.2 mA.
Here we found Vth , Rth , 𝐼𝐿΄, 𝐼𝐿.
Now we have to calculate the error .

6. Error calculation:
10.2−10
2010.2
×100%
 1.96 %
Discussion: In this experiment we found Vth =3.4 v, Rth= 113 Ω Io= 10 mA
𝐼𝐿΄ =10.2 mA. Here we found Io= 10 mA 𝐼𝐿΄ =10.2 mA in this experiment. But
this two Io & 𝐼𝐿΄ are not equal . So , we found an error of 1.96 % in this experiment.