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Basics of Electricity

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289 min

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Electrical Engineering

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Participants join this course to understand electricity from the basics in a simple and clear way. It helps them connect theory with real components like resistors, LEDs, capacitors, and transformers using easy visuals. This course builds strong fundamentals and confidence for further studies, exams, and electrical careers.

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Is this course for you?

You should take this if

You work in Automotive
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 video explains the basic principles of electricity in a clear and easy-to-understand way. It begins at the atomic level, showing how electrons move inside atoms and create electric current. The tutorial then explains the difference between conductors and insulators, helping viewers understand why some materials allow electricity to flow while others do not.Next, the video introduces key electrical terms such as voltage, current, and resistance, using simple examples and visuals. These concepts are then connected to real electrical components like resistors, LEDs, capacitors, and transformers. Viewers can see how each component works and why it is important in electrical circuits.Clear animations and visuals are used throughout the video to make complex electrical engineering ideas simple and practical. This makes the video suitable for beginners, students, and anyone new to electricity.

Source: The Engineering Mindset (Youtube)

Course suitable for

Key topics covered

How ELECTRICITY works – working principle
Electrical Current Explained – AC, DC, fuses, circuit breakers, multimeter, GFCI, ampere
Voltage Explained – What is voltage? Basic electricity potential difference
Ohm’s Law Explained – The basics of circuit theory
Conventional Current vs Electron Flow – Electricity explained
DC Series Circuits Explained – The basic working principle
DC Parallel Circuits Explained – How parallel circuits work (working principle)
Diodes Explained – Basics of how diodes work, PN junction, working principle
Inductors Explained – Basics of how inductors work, working principle
How Batteries Work – Battery electricity working principle
How Does an Electric Motor Work? – DC motor explained
How Relays Work – Basic working principle (electronics, engineering, electrician)
How Electric Motors Work – 3-phase AC induction motor
Transformers Explained – How transformers work
3-Way Switches Explained – How to wire a 3-way light switch
AC Basics – Learn all about alternating current
How Receptacles Work – Basic working principle explained, grounding
Four-Way Switching Explained – How to wire a 4-way (intermediate) light switch
What Is a kWh (Kilowatt Hour) – Calculations 💡💰 energy bill
How Alternators Work – Automotive electricity generator
How a Car Battery Works – Basic working principle
Power Factor Explained – Basics of what power factor (PF) is
Single Phase Electricity Explained – Wiring diagram, energy meter
120V / 240V Electricity Explained – Split-phase 3-wire system
Ground, Neutral, and Hot Wires Explained – Electrical engineering, grounding, ground fault

Course content

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

25 lectures4 hr 49 min

How ELECTRICITY works - working principle
10 min
Electrical Current Explained - AC DC, fuses, circuit breakers, multimeter, GFCI, ampere
18 min
Voltage Explained - What is Voltage? Basic electricity potential difference
10 min
Ohms Law Explained - The basics circuit theory
10 min
Conventional Current v Electron Flow - Electricity explained
3 min
DC Series circuits explained - The basics working principle
11 min
DC parallel circuits explained - The basics how parallel circuits work working principle
16 min
Diodes Explained - The basics how diodes work working principle pn junction
11 min
Inductors Explained - The basics how inductors work working principle
10 min
How Batteries Work - Battery electricity working principle
19 min
How does an Electric Motor work? DC Motor explained
15 min
How Relays Work - Basic working principle electronics engineering electrician amp
14 min
How Electric Motors Work - 3 phase AC induction motors ac motor
15 min
Transformers Explained - How transformers work
16 min
3 Way Switches Explained - How to wire 3 way light switch
8 min
AC Basics: Learn All About Alternating Current
4 min
How Receptacles Work - The basic working principle explained grounding
7 min
Four Way Switching Explained - How to wire 4 way intermediate light switch
8 min
What is a kWh - kilowatt hour + CALCULATIONS 💡💰 energy bill
6 min
How Alternators Work - Automotive Electricity Generator
18 min
How A Car Battery Works - basic working principle
16 min
Power Factor Explained - The basics what is power factor pf
11 min
Single Phase Electricity Explained - wiring diagram energy meter
10 min
120V 240V Electricity explained - Split phase 3 wire electrician
12 min
Ground Neutral and Hot wires explained - electrical engineering grounding ground fault
11 min

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Questions and Answers

Q: You're troubleshooting a 12 V automotive harness after a no-start complaint. The starter solenoid clicks, lights dim, but the motor doesn't turn. You're googling "car starter clicks but no crank voltage basics" while measuring 12.4 V at the battery and 7 V at the starter under load. What's the most likely root cause?

A: Governing principle: voltage drop under load indicates series resistance, not source depletion. Here the battery holds 12.4 V unloaded, but collapses locally when current flows, pointing to a resistive path in cables or grounds rather than the motor itself. Engineers often pick the armature fault because it explains dim lights, but it doesn't explain why voltage recovers immediately when load is removed.

Q: A low-voltage control module is mounted in an engine bay with winter road salt exposure. You're searching "basic electricity corrosion copper aluminum automotive connector" after seeing rising contact resistance over one winter. What's the dominant degradation mechanism?

A: Governing principle: dissimilar metals plus electrolyte drive galvanic action. Road salt supplies the electrolyte, and the potential difference between copper and aluminum raises contact resistance over time even at low voltage. Fretting traps engineers who focus on vibration, but it doesn't explain the seasonal resistance increase tied to salt exposure.

Q: You're validating insulation on a 24 V DC automotive auxiliary circuit and looking up "IEC standard basic electricity insulation test low voltage". According to IEC 60664 intent, why is a minimum creepage distance specified even when operating voltage is low?

A: Governing principle: surface leakage increases with contamination regardless of nominal voltage. IEC uses creepage to manage long-term leakage paths when dust, moisture, or salts are present, which is common in vehicles. EMI attracts engineers from signal integrity work, but it isn't the driver for creepage rules.

Q: A resistive heater rated 6 ohms at 20°C draws more current on a cold morning than expected. You're typing "ohms law temperature resistance basics electricity" into your browser. What's causing the higher current?

A: Governing principle: resistance of most metals drops as temperature falls. With fixed supply voltage, Ohm’s law gives higher current at lower resistance, exactly what shows up on a cold start. Voltage overshoot tempts controls engineers, but the effect persists steady-state, not just at startup.