Turtleand Energy

The foundation path

Learn electricity as one connected system.

Move from charge and complete circuits to power, protection, generation, and the grid. Each lesson keeps the explanation and its interactive model together.

15 lessons4 modules15 simulations

Module 1

Core electricity

Build the first mental model: charge, complete paths, voltage, current, and resistance.

  1. Lesson 01Electricity from first principlesStart with source, push, flow, resistance, load, power, and energy before memorizing equations.Simulation inside
  2. Lesson 02Static charge buildupSee how charge imbalance accumulates, reaches a critical point, and releases suddenly as a spark.Simulation inside
  3. Lesson 03Simple circuits from first principlesUnderstand source, path, load, switch, and return path before adding circuit formulas.Simulation inside
  4. Lesson 04Ohm's Law without formula fearLearn voltage, current, and resistance as one visible relationship before treating Ohm's Law as algebra.Simulation inside

Module 2

Everyday electricity

Connect AC, DC, adapters, power, energy, conductors, and protection to daily life.

  1. Lesson 05DC vs ACLearn the difference between one-direction current and reversing current, then see how devices turn wall power into usable DC.Simulation inside
  2. Lesson 06How to Read a Power Adapter Label Without Burning Your DeviceLearn the label checks that matter before plugging an adapter into a device: voltage, type, current, connector, polarity, and USB-C negotiation.Simulation inside
  3. Lesson 07Power and Energy: Watts, Watt-hours, and Electric BillsLearn why watts measure the rate of energy transfer, why watt-hours measure total energy, and how kilowatt-hours become an electric bill.Simulation inside
  4. Lesson 08Conductors, Insulators, Grounding, and SafetyLearn how conductors guide current, how insulators resist unwanted paths, and how grounding gives fault current a safer route.Simulation inside

Module 3

Generate, store, and move electricity

See how generators, transformers, and batteries turn other forms of energy into useful electrical systems.

  1. Lesson 09Generators and Electromagnetic InductionSee how motion between a magnet and wire coil changes magnetic flux and makes voltage appear at the wire ends.Simulation inside
  2. Lesson 10Why AC Won the GridLearn how transformers made long-distance AC power practical by raising voltage, lowering current, and reducing wire heat loss before power is stepped down near users.Simulation inside
  3. Lesson 10 bisBatteries and Chemical ElectricityLearn the beginner battery model: chemical difference creates voltage, electrons move through the outside circuit, and ions move through the electrolyte inside the battery.Simulation inside

Module 4

From buildings to grids

Follow electricity through protected buildings, neighborhoods, balanced grids, and generation mixes.

  1. Lesson 11House Wiring Faults and ProtectionUse one simple mental model: live and neutral form the normal loop, breakers/fuses watch too much current, and GFCI/RCD devices watch leakage.Simulation inside
  2. Lesson 12Neighborhood DistributionLearn how power moves from transmission into neighborhood feeders, local transformers, and home service connections, and why higher distribution voltage lowers feeder current and heat loss.Simulation inside
  3. Lesson 13Grid Balancing, Frequency, and BlackoutsLearn why generation and consumption must stay in rhythm, how frequency reveals imbalance, and how layered controls and protection keep disturbances from becoming wider blackouts.Simulation inside
  4. Lesson 14Why Electricity Mixes DifferLearn why countries build different electricity portfolios, why installed capacity is not the same as actual generation, and how complementary resources and storage help meet demand over time.Simulation inside