The document discusses parallel circuits, detailing their definition, characteristics, and formulas for calculating total resistance and current. It explains Kirchhoff's laws as they apply to parallel circuits and provides examples of calculations involving current and voltage. Additionally, it highlights the practical applications of parallel circuits in everyday life such as electrical connections and devices.

1. TEAM SPLENDID
1.Iftear Alam Sakib (161-15-
2.Shahriya Siddque Anik (161-15-
3.Samiullah Hossain (161-15-
4.Jobayer Ahmed (161-15-
5.Shahriyar Nawal Shoumik (161-15-
6.Monjur Bin Shams (161-15-
PARALLEL CIRCUIT

2. CIRCUIT AND IT’S TYPES
What is circuit
Types of circuits

3. WHAT IS PARALLEL CICRCUIT
Definition
Major characteristic
When we will call a circuit
a parallel circuit

4. BASIC CHARECTERISTICS OF PARALLEL CIRCUIT
• Having two or more paths for current to flow
• Same voltage throughout the whole circuit
• Source current = sum of the currents flowing through each
component.
It = I1+ I2 + I3 It = I (total)
• Formula to find total resistance
• 1/Rt = 1/R1 + 1/R2 + 1/R3 +….. Rt = R (total)
• Continuity of the flowing of current
• Potential drops Vt = V1 = V2 =V3… Vt = V (total)

5. SOME OTHER FUNCTIONALITIES OF PARALLEL
CIRCUIT
Equivalent resistance 1/RT = 1/R1 + 1/R2 + 1/R3
RT=0.625kΩ RT=(1/n)*R

6. SOME OTHER FUNCTIONALITIES OF PARALLEL
CIRCUIT
 Calculation of Conductivity
 Voltage remains constant
G=1/RT
GT=G1 + G2 + G3 +….+GN

7. CURRENT & VOLTAGE DIVIDING LAW
•KVL
v1 + v2 + v3 = v4
•KCL i2 + i3 = i1 + i4

8. Kirchhoff’s Current Law
I1 =
I ∗ R23
(R1+R23 )
It=I1+I2+I3+I4

9. APPLICATION OF KCL
1
𝑅 𝑡
=
1
𝑅1
+
1
R2
Rt = 6 ohm
I=
v
R
= 4.5 A
I1 =
I ∗ R23
(R1+R23 )
= 3 A
I1 =
I ∗ R23
(R1+R23 )
= 1.5A
I= I1 + I2
V1 = I1* R1 = 27 v
V2 = I2* R2 = 27 v
V= v1 = V2

10. 1
𝑅 𝑡
=
1
𝑅1
+
1
R2
+
1
R3
Rt = 0.54
I=
v
R
= 11.11 A
I1 =
I ∗ R23
(R1+R23 )
= 6.06
I23 = (I - I1) = 5.05
I2 =
I23 ∗ R2
(R2+R3 )
= 2.02
I3 = (I23 - I2 ) = 3.03
I= I1 + I2 + I3
V1 = I1* R1 = 6.06
V2 = I2* R2 = 6.06
V3 = I3* R3 = 6.06
APPLICATION OF KCL

11. DISTINGUISHES BETWEEN SERIES AND
PARALLEL CIRCUITS
• JUNCTION POINTS OR NODES
• KVL AND KCL THEORY
• VOLTAGE AND CURRENT
• DIFFERENCES TO DETERMINE THE VALUE OF THE COMPONENTS
• USAGE

12. APPLICATIONS OF PARALLEL CIRCUIT IN OUR DAILY
LIFE
• Electrical connections
• Computer analysis
• Car system
• LED
• Device