Lecture (L2-2) Kirchhoff's Laws (KCL,KVL)
- Due Sep 7, 2021 by 11am
- Points None
Kirchoff's Laws are the first of several methods we will use to solve circuit problems. We will also use this method to DERIVE several other methods. The two basic concepts of Kirchoff's Laws are key concepts in electrical engineering -- (1) The sum of voltages in a closed loop is zero and (2) The sum of currents coming into a node = sum of currents going out.
Questions of the Day (Learning Objectives)
- What are Kirchhoff's Laws, and how do you apply them? (Write yourself a cookbook, with details, for solving for unknown I and V in circuits using KCL and KVL).
Readings & Reference Materials
-
Textbook: Chapter 2-2
Cookbook: Kirchhoffs laws KCL KVL single page.pdf Download Cookbook: Kirchhoffs laws KCL KVL single page.pdf
cookbook KVL KCl with matrices.pdf Download cookbook KVL KCl with matrices.pdf
Cookbook (more detailed) : KVL KCL Eq'ns Download Cookbook (more detailed) : KVL KCL Eq'ns and Cookbook: KVL KCL Complete Guide Download Cookbook: KVL KCL Complete Guide
ECE Toolbox Cards for Planning your Solution Procedure KVL equations.pdf Download KVL equations.pdf
Voltage and Current Dividers: cookbook VI.pdf Download Voltage and Current Dividers: cookbook VI.pdf
- Math: Matrix Equations / Solutions
-
Application: Resistive Sensors
Application : Strain Gauges (Links to an external site.)
Info: What EE's Do
Lectures
Watch video lecture before class and take notes on the Question of the Day.
L(2-2) Kirchoffs Laws KVL,KCL
Links to an external site.
Power Point to take notes on: L(2-2) -- Kirchhoffs laws KCL KVL [Compatibility Mode].pdf
Download L(2-2) -- Kirchhoffs laws KCL KVL [Compatibility Mode].pdf
Index for L(2-2): pdf Download pdf | docx Download docx
Self-Assessment: ECE1250_Assess2_2.pdf Download ECE1250_Assess2_2.pdf
Extra Examples
- I've included a number of additional examples below. You do NOT need to watch these before class. They are here for your future review as needed.
-
Additional Videos:
Kirchhoff's Voltage Law (KVL) with a Practical Example(基尔霍夫电压定律及实例) (Links to an external site.)
Kirchhoff's Current Law (KCL) and a Practical Example(基尔霍夫电流定律及实例)
Extra (Furse) Video Example of Kirchoff's Laws:
kvl.pdf Download kvl.pdf (to take notes on)
kvl Kirchoffs Law example (with matrix set up) Links to an external site.
And another example
KVL/KCL equations to get I Links to an external site.2 from I and V find power
Links to an external site.Extra Practice Examples (thank you to Arn Stolp):Kirchoffs laws extra examples.pdf Download Kirchoffs laws extra examples.pdf
Another example similar to problem 2.27
Kirchoffs example Links to an external site.
Additional Examples
R in series and parallel (2) and KVCL with Matlab and checking circuits.pdf Download R in series and parallel (2) and KVCL with Matlab and checking circuits.pdf
KVL KCL.pdf Download KVL KCL.pdf
Our homework problems done as Matrix equations:
KVL homework using matrix equations.pdf Download KVL homework using matrix equations.pdf
problem 2.27 wrong and right ways.pdf Download problem 2.27 wrong and right ways.pdf
more examples from the book.pdf Download more examples from the book.pdf
Examples from Dr. Cotter's Conceptual Tools:
Circ:Kirchhoff's:i sum node Links to an external site.
Circ:Kirchhoff's:v loop Links to an external site.
Circ:Kirchhoff's:v i eqn's:Ex1 Links to an external site.
Circ:Kirchhoff's:v i eqn's:Ex2 Links to an external site.
Circ:Kirchhoff's:solve:Ex1 Links to an external site.
Circ:Kirchhoff's:solve:Ex2 Links to an external site.
Other KVL/KCL Examples:
Q2solSu19.pdf Download Q2solSu19.pdf
Q2 sol Su18.pdf Download Q2 sol Su18.pdf
In Class
Bring your notes on the Question of the Day. We will start your homework.
Day 1:
L(2-2 in class) -- Kirchhoffs laws KCL KVL.ppt Download L(2-2 in class) -- Kirchhoffs laws KCL KVL.ppt
in class 2-2 CMF.docx Download in class 2-2 CMF.docx
Day 2:
L(2-2 b in class) -- Kirchhoffs laws KCL KVL.ppt Download L(2-2 b in class) -- Kirchhoffs laws KCL KVL.ppt
in class 2-2b CMF.docx Download in class 2-2b CMF.docx
cookbook KVL KCl with matrices.pdf Download cookbook KVL KCl with matrices.pdf
Application: Resistive Sensors
Application : Strain Gauges (Links to an external site.)
Info: What EE's Do
Find Rubric