The Flow of Power
Stop guessing and start building. Learn to see electricity as a flowing current you can direct, control, and use to bring your own gadgets to life.
Like Duolingo, but for The Flow of Power. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through Making the Connection and Thinking Like a Builder. It starts from scratch.
Free forever · No credit card · iPhone & Android

Key ideas in The Flow of Power
- Electricity must return to its source to flow
- The load is the part that does the actual work
- An open circuit prevents any work from being done
- The load consumes electrical energy to create light, heat, or motion
- The negative terminal is the necessary destination for the loop
- Wires and batteries are the path and source, not the load
- The necessity of a closed path for electrical work
- Identifying the role of the load in a circuit
- Voltage is the potential energy or pressure
- Current is the physical flow of charge
- Electricity takes the path of least resistance
- Without a load to use the energy, the circuit generates dangerous heat
- Short circuits can drain batteries instantly or cause damage
- Recognizing the danger and cause of a short circuit
- Higher voltage can push more current through the same path
- Distinguishing between voltage and current
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 The Flow of Power 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.
If you are building a circuit to light up a small lamp, which part is considered the 'load'?
Get it right to open this lesson and 11 more in the app.
How to learn The Flow of Power, step by step
Go in order. 12 short levels across 2 sections, about 24 minutes in all, five minutes a day.
- 1
Making the Connection
- The Complete Loop
- Taming the Current
- 2
Thinking Like a Builder
- Reading the Map
- The Component Toolkit
2 sections · 4 units · 12 levels. Built to play, not to enroll.
Questions about The Flow of Power
How do I learn The Flow of Power?
Go in order: start with Making the Connection, then Thinking Like a Builder. On Tomo that's 12 short levels, about 24 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 The Flow of Power?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. The Flow of Power is one of its free courses, and you can type any other topic to get a course of your own.
Is The Flow of Power free?
Yes. The Flow of Power 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 The Flow of Power?
12 levels across 2 sections, about 24 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 The Flow of Power?
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
The Flow of Power is taught in the Professor style: clear, structured, thorough. 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.
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Start The Flow of Power today.
Download Tomo, search The Flow of Power, and play your first lesson in under a minute.