Electric Circuits
Build an intuitive and practical grasp of electrical circuits from the ground up. Master current, voltage, and circuit laws, simplify complex networks with proven theorems, and predict dynamic circuit behavior over time.
Like Duolingo, but for Electric Circuits. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
24 levels across 4 sections, about 48 minutes end to end, roughly 10 days at five minutes a day. It moves through Making Sense of Electric Flow, Analyzing Interconnected Networks, Circuit Simplification Theorems, and Energy Storage and Dynamic Circuits. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Electric Circuits
- Current is a continuous loop of moving charges, not a one-way delivery
- Breaking the loop at any point stops charge movement everywhere in that path
- A power source must receive charges back at its negative terminal to keep pushing them out
- Voltage is an electrical pressure difference between two distinct points, not an absolute charge level
- Because both of the bird's feet touch the same wire, the voltage difference between them is virtually zero
- Current only flows through an object when there is a difference in voltage across it to drive the charges
- Electrical power measures how quickly an element consumes or delivers energy
- Power is calculated by multiplying the voltage across the component by the current flowing through it (P = V × I)
- A low-voltage circuit carrying high current can transfer the exact same power as a high-voltage circuit carrying low current
- Loads (like resistors and charging batteries) drop voltage as current enters their positive terminal
- Sources (like discharging batteries) push current out of their positive terminal into the circuit
- The direction current moves relative to the plus and minus markings tells you whether an element feeds energy into the circuit or extracts it
- An ideal voltage source maintains its specified voltage across its terminals no matter how much or how little current the circuit demands
- The current drawn from an ideal voltage source is determined entirely by the rest of the connected circuit
- An ideal source never drops its voltage internally under heavy electrical load
- Current increases in direct proportion to voltage across a fixed resistor
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Electric Circuits the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
What happens to the electric charges if you cut a wire anywhere in a simple circuit loop?
Get it right to open this lesson and 23 more in the app.
How to learn Electric Circuits, step by step
Go in order. 24 short levels across 4 sections, about 48 minutes in all, five minutes a day.
- 1
Making Sense of Electric Flow
- Voltage, Current, and Power
- Resistance and Flow Division
- 2
Analyzing Interconnected Networks
- Kirchhoff's Laws and Circuit Topology
- Systematic Analysis: Nodes and Meshes
- 3
Circuit Simplification Theorems
- Linearity, Superposition, and Transformations
- Thévenin, Norton, and Power Transfer
- 4
Energy Storage and Dynamic Circuits
- Capacitors and Inductors
- Transients and Step Response in RC and RL Circuits
4 sections · 8 units · 24 levels. Built to play, not to enroll.
Questions about Electric Circuits
How do I learn Electric Circuits?
Go in order: start with Making Sense of Electric Flow, then Analyzing Interconnected Networks, then Circuit Simplification Theorems, then Energy Storage and Dynamic Circuits. On Tomo that's 24 short levels, about 48 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Electric Circuits?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Electric Circuits is one of its free courses, and you can type any other topic to get a course of your own.
Is the Electric Circuits course free?
Yes. Electric Circuits is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Electric Circuits?
24 levels across 4 sections, about 48 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Electric Circuits?
No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Electric Circuits is taught in the Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
More Technology on Tomo
How Electric Circuits Work
Learn how electricity moves through everyday devices and gain the confidence to build your own circuits. From breadboarding components to debugging with a multimeter, discover the practical rules that bring hardware to life.
Electricity and Practical Circuits
Move beyond basic textbook formulas to build a working intuition for real circuits. Learn how components behave under load, diagnose tricky faults, and master the forces shaping electrical systems.
How Circuits Actually Work
Gain an intuitive grasp of voltage, current, and resistance by seeing how electricity actually moves through components. Learn to trace, design, and troubleshoot circuits from basic power loops to transistor-driven switches.
Circuit Basics: Ohm's and Kirchhoff's Laws
Master the core rules that govern how electricity moves through wires, components, and junctions. Learn to calculate voltage, current, and resistance in simple circuits, and use those insights to troubleshoot real hardware issues. Gain the foundational intuition needed to build, analyze, and debug basic electronics.
How Electronics Work
Learn how electricity moves through circuits, powers components, and responds to controls. Build real intuition for voltage, resistance, and transistors through practical circuit design. Go from a bare battery to building responsive, sensor-driven hardware.
Heavy Machinery & Automotive Electronics Diagnostics
Move beyond basic multimeter checks and component swapping. Master loaded circuit analysis, oscilloscope waveform interpretation, J1939 CAN physical layer troubleshooting, and ECU driver stage diagnostics in complex machines.
Start Electric Circuits today.
Download Tomo, search Electric Circuits, and play your first lesson in under a minute.