Table of Contents
What This Module is About............................................................................................................. i
What I Need to Know....................................................................................................................... i
How to Learn from this Module..................................................................................................... ii
Icons of this Module........................................................................................................................ ii
What I Know.................................................................................................................................... iii
THIRD QUARTER
Lesson 1: Resistors in Series and Parallel
What Is It: Resistors in Series and Parallel....................................................... 1
What I Have Learned............................................................................................ 4
Lesson 2: Kirchhoff’s Rules
What Is It: Kirchhoff’s Rules............................................................................... 5
What I Have Learned.......................................................................................... 8
Lesson 3: R-C Circuits
What Is It: R-C Circuits....................................................................................... 9
What I Have Learned:......................................................................................... 12
Summary.........................................................................................................................................13
Assessment: (Post-Test).............................................................................................................. 14
Key to Answers.............................................................................................................................. 15
References..................................................................................................................................... 16
,What This Module is About
This module demonstrates your understanding on the concepts of Direct-
Current circuits. It specifically discusses about Resistors in Series and Parallel,
Kirchhoff’s Rules, and R-C circuits.
This module will help you explore the key concepts on topics that will help you
answer the questions pertaining to direct-current circuits.
This module has three (3) lessons:
Lesson 1 – Resistors in Series and Parallel
Lesson 2 – Kirchhoff’s Rules
Lesson 3 – R-C Circuits
What I Need to Know
At the end of this module, you should be able to:
1. Draw circuit diagrams with power sources (cell or battery), switches, lamps, resistors (fixed
and variable) fuses, ammeters and voltmeter STEM_GP12EM-IIIf-47;
2. Evaluate the equivalent resistance, current, and voltage in a given network of resistors
connected in series and/or parallel STEM_GP12EM-IIIg-48;
3. Calculate the current and voltage through and across circuit elements using Kirchhoff’s loop
and junction rules (at most 2 loops only) STEM_GP12EM-IIIg-49;
4. Solve problems involving the calculation of currents and potential difference in circuits
consisting of batteries, resistors and capacitors. STEM_GP12EM-IIIg-51;
i
, How to Learn from this Module
To achieve the objectives cited above, you are to do the following:
• Take your time reading the lessons carefully.
• Follow the directions and/or instructions in the activities and exercises diligently.
• Answer all the given tests and exercises.
Icons of this Module
What I Need to This part contains learning objectives that
Know are set for you to learn as you go along the
module.
What I know This is an assessment as to your level of
knowledge to the subject matter at hand,
meant specifically to gauge prior related
knowledge
What’s In This part connects previous lessons with that
of the current one.
What’s New An introduction of the new lesson through
various activities, before it will be presented
to you
What is It These are discussions of the activities as a
way to deepen your discovery and under-
standing of the concept.
What’s More These are follow-up activities that are in-
tended for you to practice further in order to
master the competencies.
These are activities designed to process
What I Have what you have learned from the lessons.
Learned
What I can do These are tasks that are designed to show-
case your skills and knowledge gained, and
applied into real-life concerns and situations.
ii
What This Module is About............................................................................................................. i
What I Need to Know....................................................................................................................... i
How to Learn from this Module..................................................................................................... ii
Icons of this Module........................................................................................................................ ii
What I Know.................................................................................................................................... iii
THIRD QUARTER
Lesson 1: Resistors in Series and Parallel
What Is It: Resistors in Series and Parallel....................................................... 1
What I Have Learned............................................................................................ 4
Lesson 2: Kirchhoff’s Rules
What Is It: Kirchhoff’s Rules............................................................................... 5
What I Have Learned.......................................................................................... 8
Lesson 3: R-C Circuits
What Is It: R-C Circuits....................................................................................... 9
What I Have Learned:......................................................................................... 12
Summary.........................................................................................................................................13
Assessment: (Post-Test).............................................................................................................. 14
Key to Answers.............................................................................................................................. 15
References..................................................................................................................................... 16
,What This Module is About
This module demonstrates your understanding on the concepts of Direct-
Current circuits. It specifically discusses about Resistors in Series and Parallel,
Kirchhoff’s Rules, and R-C circuits.
This module will help you explore the key concepts on topics that will help you
answer the questions pertaining to direct-current circuits.
This module has three (3) lessons:
Lesson 1 – Resistors in Series and Parallel
Lesson 2 – Kirchhoff’s Rules
Lesson 3 – R-C Circuits
What I Need to Know
At the end of this module, you should be able to:
1. Draw circuit diagrams with power sources (cell or battery), switches, lamps, resistors (fixed
and variable) fuses, ammeters and voltmeter STEM_GP12EM-IIIf-47;
2. Evaluate the equivalent resistance, current, and voltage in a given network of resistors
connected in series and/or parallel STEM_GP12EM-IIIg-48;
3. Calculate the current and voltage through and across circuit elements using Kirchhoff’s loop
and junction rules (at most 2 loops only) STEM_GP12EM-IIIg-49;
4. Solve problems involving the calculation of currents and potential difference in circuits
consisting of batteries, resistors and capacitors. STEM_GP12EM-IIIg-51;
i
, How to Learn from this Module
To achieve the objectives cited above, you are to do the following:
• Take your time reading the lessons carefully.
• Follow the directions and/or instructions in the activities and exercises diligently.
• Answer all the given tests and exercises.
Icons of this Module
What I Need to This part contains learning objectives that
Know are set for you to learn as you go along the
module.
What I know This is an assessment as to your level of
knowledge to the subject matter at hand,
meant specifically to gauge prior related
knowledge
What’s In This part connects previous lessons with that
of the current one.
What’s New An introduction of the new lesson through
various activities, before it will be presented
to you
What is It These are discussions of the activities as a
way to deepen your discovery and under-
standing of the concept.
What’s More These are follow-up activities that are in-
tended for you to practice further in order to
master the competencies.
These are activities designed to process
What I Have what you have learned from the lessons.
Learned
What I can do These are tasks that are designed to show-
case your skills and knowledge gained, and
applied into real-life concerns and situations.
ii
