Electrical circuit verification of K irchhoff’s Current Law(KCL) & Current dividerrule(CDR ).

Electrical circuit verification of Kirchhoff’s Current Law (KCL)&Current divider rule(CDR ).

1. GroupNo 07
CourseNo:CSE133
CourseName:ElectricalCircuitLaboratory
ExperimentNo: 03
NameOftheexperiment:VerificationofKirchhoff sCurrentLaw(KCL)&Current
dividerrule(CDR).
Dateofperformance:10-06-2017
Dateofsubmission:17-06-2017
Submittedby--
Name:KhandakarSanjanaAkterMun
StudentId:163-15-8443
Othermembers
AminaKhatun ID:163-15-8440
SharminAkter ID:163-15-8436
Section C

2. OBJECTIVE:
ThisexperimentisintendedtoverifyKirchhoff sCurrentLaw(KCL)&Current
dividerrule(CDR)withthehelpofparallelcircuitandderiveequivalentresistance
ofthecircuitbothexperimentallyandanalytically.
Theory:
KCLstatesthat,thesumofthecurrentsenteringanynodeequalsthesumofthe
currentsleavingthenode.
"
enteringi ="
leaving i
Thecurrentdividerruleisgivenby-
xI=
pR
xR
×
sI
Where,x=1,2&3.
Theequivalent(total)Resistanceofaparallelcircuitisgivenbytheformula-
1
pR
=
1
1 R
+
1
2R
+
1
3R

3. ExperimentalSetUp:
2.2vI 3.3v
2I
sV
1I
1v 4.7v
Where, I=1I+2I
Apparatus:
1.OneDCVoltmeter(0-300V);
2.OneDCAmmeter(0-5A);
3.FourResistors;
4.OneMultimeter;
5.DCPowerSupply;
6.BreadBoard;

4. DataCollection:
NoOfObs. I(A)
1I(A)
2I(A)
1 I+
2I
1. 1.62 1.43 0.17 1.60
2. 1.94 1.68 0.22 1.90
3. 2.27 1.99 0.25 2.24
4. 2.59 2.26 0.28 2.54
5. 2.92 2.58 0.32 2.90
6. 3.24 2.85 0.35 3.20
Discussion:
Thevoltageresultsconvincinglyseemtobeingoodagreement.Thetablesclearly
indicatethatthecalculatedandsimulatedresultswerefoundtobethesame.Slightdeviations
intheexperimentalresultsmighthavebeencausedbyfluctuatingvaluesinthe
ammetermakingithard toreadprecisevalues.Inaddition,settingthevoltmeterto
exactly10VontheDigitalLabalsoprovedtobeadifficulttaskbecausetheknobwastoo
sensitive.Ifthisexperimentistoberedone,improvementscanbemadebytakingenough
timetosetthesourcevoltageontheDigitalLabtothecorrectvalue.