TechnologyThe BestieBeginner
Everyday Electricity and Electronics, a free technology course on Tomo

Everyday Electricity and Electronics

Demystify the invisible currents powering your home and pocket devices. Learn how to match chargers safely, navigate circuit breakers, protect your battery health, and understand how simple electricity becomes digital logic.

Like Duolingo, but for Everyday Electricity and Electronics. 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 Mastering Household Power and Inside Your Devices. It starts from scratch.

12 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Barnaby the Battery, the guide who teaches the Everyday Electricity and Electronics course
Everyday Electricity and Electronics
with Barnaby the Battery
12
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in Everyday Electricity and Electronics

  • Voltage is the electrical push or pressure from a power source
  • Amperage measures how many charges flow past a point each second
  • Wattage is the product of pressure and flow, representing total electrical power delivered
  • A power supply dictates and forces its voltage onto whatever device is plugged in
  • Appliances are built with components rated for a specific electrical pressure; exceeding it burns out internal circuitry
  • A device pulls current (amps) according to its needs, but it cannot refuse incoming voltage
  • The replacement adapter's voltage must match the device's requirement exactly
  • The adapter's amp rating must be equal to or higher than what the device asks for, because the device only draws what it requires
  • An adapter with too few amps will overheat or fail because the device tries to pull more current than the adapter can safely supply
  • Wattage directly measures the rate at which an appliance consumes energy, regardless of what type of device it is
  • At the same wall outlet voltage, high-wattage appliances like heaters pull vastly more current than low-wattage electronics like chargers
  • Comparing wattages reveals which appliances contribute most heavily to household electric load
  • Every electrical wire has internal resistance that converts flowing current into heat
  • Thinner wires offer higher electrical resistance to high current flow than thick wires
  • Drawing heavy current through a wire with high resistance produces intense heat, risking melted insulation and fire
  • Electricity requires an unbroken, closed loop to flow from the power source and back
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives Everyday Electricity and Electronics 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.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

Volts, Amps, and Watts Explained

What does amperage measure in a wire?

Get it right to open this lesson and 11 more in the app.

Course map

How to learn Everyday Electricity and Electronics, step by step

Go in order. 12 short levels across 2 sections, about 24 minutes in all, five minutes a day.

  1. 1

    Mastering Household Power

    • Matching Ratings: Volts, Amps, and Watts
    • Navigating Home Circuit Safety
  2. 2

    Inside Your Devices

    • Managing Batteries and Adapters
    • From Power to Logic: How Electronics Think

2 sections · 4 units · 12 levels. Built to play, not to enroll.

Questions

Questions about Everyday Electricity and Electronics

  1. How do I learn Everyday Electricity and Electronics?

    Go in order: start with Mastering Household Power, then Inside Your Devices. 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.

  2. Is there a Duolingo-style app for Everyday Electricity and Electronics?

    Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Everyday Electricity and Electronics is one of its free courses, and you can type any other topic to get a course of your own.

  3. Is the Everyday Electricity and Electronics course free?

    Yes. Everyday Electricity and Electronics is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.

  4. How long does it take to learn Everyday Electricity and Electronics?

    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.

  5. Do I need any background to start Everyday Electricity and Electronics?

    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.

New

Tomo is in ChatGPT

Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.

Add Tomo to ChatGPT
How it's taught

You pick the voice

This course
The Bestie

Everyday Electricity and Electronics 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.

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Start free

Start Everyday Electricity and Electronics today.

Download Tomo, search Everyday Electricity and Electronics, and play your first lesson in under a minute.