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Self-paced Beginner

DC Circuits

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FREE

131 min

Anytime

English

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Engineering AcademyLearn Without Limits: Free Engineering Courses

Electronics & Instrumentation

Electrical Engineering

Lifetime access
Certificate of completion
Foundational Learning
Access to Study Materials

Why enroll

Participants join this course to build a strong foundation in DC circuit analysis and clearly understand core electrical concepts.It helps them solve numerical problems confidently using network theorems and analysis techniques.This course is essential for first-year engineering success and advanced electrical subjects ahead.

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Engineering Academy

Engineer

Learn Without Limits: Free Engineering Courses

5+ yrs experience·India

Is this course for you?

You should take this if

You work in Electronics & Instrumentation
You're a Electrical Engineering professional
You want to build skills in Engineering & Design, Project Management
You prefer self-paced learning you can revisit

You should skip if

You need a different specialisation outside Electrical Engineering
You need live interaction with an instructor

Course details

This course introduces the DC Circuit, also known as a Direct Current Circuit, which is one of the most important foundations of electrical and electronics engineering.It is specially designed for first-year engineering students to build strong basic concepts.You will learn the basic elements of DC circuits, including resistance, current, voltage, and power.The course clearly explains Ohm’s Law and how it is applied to real electrical circuits.You will understand potential difference and how current flows in a closed circuit.Important laws such as Kirchhoff’s Current Law (KCL) and Kirchhoff’s Voltage Law (KVL) are covered in a simple way.
The difference between ideal and practical voltage and current sources is explained with examples.You will study source transformation and star–delta (Y–Δ) transformation for circuit simplification.The course covers DC network analysis methods like mesh analysis, nodal analysis, super-mesh, and super-node.
You will also solve problems using network theorems such as Superposition, Thevenin’s, Norton’s, and Maximum Power Transfer theorem.

Source: Ekeeda (Youtube)

Course suitable for

Key topics covered

Introduction to Resistance in Electronics - DC Circuits - Basic Electrical Engineering
Series Connections of The Resistors - DC Circuits - Basic Electrical Engineering
Parallel Connections of Resistors - DC Circuits - Basic Electrical Engineering
Series & Parallel Connections of Resistors : Problem 1 - DC Circuits - Basic Electrical Engineering
Series & Parallel Connections of Resistors : Problem 2 - DC Circuits - Basic Electrical Engineering
Series & Parallel Connections of Resistors : Problem 3 - DC Circuits - Basic Electrical Engineering
Series & Parallel Connections of Resistors : Problem 4 - DC Circuits - Basic Electrical Engineering
Series & Parallel Connections of Resistors : Problem 5 - DC Circuits - Basic Electrical Engineering
Star Delta Connections of Resistances - DC Circuits - Basic Electrical Engineering
Derivation for Conversion of Delta Connection to Star Connection - DC Circuits
Derivation for Conversion of Star Connection to Delta Connection - DC Circuits
Star to Delta Transformation : Problem 1 - DC Circuits - Basic Electrical Engineering
Star to Delta Transformation : Problem 2 - DC Circuits - Basic Electrical Engineering
Ideal Voltage Source - DC Circuits - Basic Electrical Engineering
Practical Voltage Source - DC Circuits - Basic Electrical Engineering
Ideal Current Source - DC Circuits - Basic Electrical Engineering
Practical Current Source - DC Circuits - Basic Electrical Engineering
Current to Voltage Source Transformation - DC Circuits - Basic Electrical Engineering
Voltage to Current Source Transformation - DC Circuits - Basic Electrical Engineering
Current Source in Series with Resistances and-or Voltage Sources - DC Circuits
Voltage Source in Parallel with Resistance and-or Current Sources - DC Circuits
Source Transformation : Problem 1 - DC Circuits - Basic Electrical Engineering
Source Transformation : Problem 3 - DC Circuits - Basic Electrical Engineering
Source Transformation : Problem 4 - DC Circuits - Basic Electrical Engineering
Voltage Divider Rule (VDR) - DC Circuits - Basic Electrical Engineering

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

25 lectures2 hr 11 min

Introduction to Resistance in Electronics - DC Circuits - Basic Electrical Engineering
2 min
Series Connections of The Resistors - DC Circuits - Basic Electrical Engineering
3 min
Parallel Connections of Resistors - DC Circuits - Basic Electrical Engineering
3 min
Series & Parallel Connections of Resistors : Problem 1 - DC Circuits - Basic Electrical Engineering
4 min
Series & Parallel Connections of Resistors : Problem 2 - DC Circuits - Basic Electrical Engineering
5 min
Series & Parallel Connections of Resistors : Problem 3 - DC Circuits - Basic Electrical Engineering
5 min
Series & Parallel Connections of Resistors : Problem 4 - DC Circuits - Basic Electrical Engineering
9 min
Series & Parallel Connections of Resistors : Problem 5 - DC Circuits - Basic Electrical Engineering
6 min
Star Delta Connections of Resistances - DC Circuits - Basic Electrical Engineering
5 min
Derivation for Conversion of Delta Connection to Star Connection - DC Circuits
14 min
Derivation for Conversion of Star Connection to Delta Connection - DC Circuits
9 min
Star to Delta Transformation : Problem 1 - DC Circuits - Basic Electrical Engineering
4 min
Star to Delta Transformation : Problem 2 - DC Circuits - Basic Electrical Engineering
7 min
Ideal Voltage Source - DC Circuits - Basic Electrical Engineering
4 min
Practical Voltage Source - DC Circuits - Basic Electrical Engineering
5 min
Ideal Current Source - DC Circuits - Basic Electrical Engineering
3 min
Practical Current Source - DC Circuits - Basic Electrical Engineering
5 min
Current to Voltage Source Transformation - DC Circuits - Basic Electrical Engineering
3 min
Voltage to Current Source Transformation - DC Circuits - Basic Electrical Engineering
3 min
Current Source in Series with Resistances and-or voltage Sources - DC Circuits
2 min
Voltage Source in Parallel with Resistance and-or Current Sources - DC Circuits
3 min
Source Transformation : Problem 1 - DC Circuits - Basic Electrical Engineering
6 min
Source Transformation : Problem 3 - DC Circuits - Basic Electrical Engineering
7 min
Source Transformation : Problem 4 - DC Circuits - Basic Electrical Engineering
10 min
Voltage Divider Rule (VDR) - DC Circuits - Basic Electrical Engineering
4 min

Opportunities that await you!

Skills & tools you'll gain

Engineering & Design

Project Management

Research & Developmnet

Career opportunities

Why people choose EveryEng

Industry-aligned courses, expert training, hands-on learning, recognized certifications, and job opportunities-all in a flexible and supportive environment.

What learners say about this course

Boora Mahesh civil engineer

Mar 14, 2026

drtudfjygfygughihj

Bhavani S Student

Feb 22, 2026

Nice

Jayalaxmi Sudi

Feb 15, 2026

Good

Engineering Academy Engineer

May 3, 2026

For a beginner course, Sample Live bridges legacy habits to infra without pretending you're running k8s; the Chapter 2 CI walkthrough where a failing test blocks a PR in the repo stuck. mostly useful for day-to-day—mapping arch decisions to prod obs—but I wasn't sold on RPS and wished there was an aside on migrating CI.

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Questions and Answers

Q: You're on-site for pre-commissioning and the loop-check sheet flags a supply mismatch. You google "24V DC control circuit acceptance test sequence". Before energizing a DC control panel feeding contactor coils, what do you verify first to satisfy functional safety and avoid latent wiring damage?

A: Principle: Prove absence of gross wiring faults before applying energy. Applied here: IR testing with the circuit dead catches crushed cables or mis-terminated returns that a live polarity check won't reveal, and it belongs before any functional checks. Distractor B traps engineers who know polarity matters but skip the dead-circuit verification step and move straight to live probing.

Q: A subcontractor claims a sensor drop is negligible. You search "estimate voltage drop 24V DC sensor cable". A 24 V DC proximity sensor draws 40 mA over 30 m of 0.5 mm² copper. What's the order-of-magnitude voltage drop you expect?

A: Principle: V = I × R, with copper resistance taken per loop length. Applied here: 0.5 mm² is ~36 mΩ/m; 60 m loop gives ~2.2 Ω, times 0.04 A lands near 0.09 V, even with margin still sub-0.2 V. Distractor B catches those who remember long runs matter but forget to convert to loop length and realistic conductor resistance.

Q: Reviewing the GA and wiring diagram, you type "DC schematic dashed line symbol meaning". A dashed line encloses a resistor and diode across a relay coil. What does that enclosure indicate in most automotive DC schematics?

A: Principle: Enclosures in schematics indicate physical grouping, not logic. Applied here: A dashed boundary around coil suppression usually means the snubber is internal to the relay, affecting replacement and diagnostics. Distractor B pulls in engineers used to EMC option packs who assume dashed equals optional rather than physically integrated.

Q: During SAT you find a 3% overvoltage on a DC bus. You search "DC power supply acceptance criteria overvoltage". With a 24 V DC PSU specified at ±10%, what's the correct acceptance action?

A: Principle: Acceptance is against specified tolerance, not nominal value. Applied here: ±10% allows 21.6–26.4 V; 3% high is compliant, so energization can proceed while still documenting the reading. Distractor C snares engineers who chase nominal numbers and forget load regulation and tolerance bands.