⚡ Sammy's World of Electricity and Electronics
Interactive · child-friendly · safe

Discover electricity and electronics

Six learning modules with simulations, quizzes, and stars. All practical demonstrations are virtual or use safe extra-low voltage. Mains electricity must always be handled by qualified professionals.

Basic rule: Never open sockets, power supplies, distribution boards, or meter cabinets. Never experiment with 230 volts. If a cable is damaged or an electrical accident occurs, keep your distance, tell an adult, and call 112 in an emergency.
1

Electricity – what is it?

Generation, direct and alternating current, units, hazards, batteries and rechargeable batteries.

2

The meter cabinet

Fuses, meters, RCDs, and clear limits for non-professionals.

3

Water and electricity

Bathrooms, thunderstorms, hair dryers, gardens, pools, and ponds.

4

Electrical circuits

Interactive lamps, switches, and two-way switching circuits.

5

Electronic components

Resistor, diode, transistor, capacitor, electrolytic capacitor, and IC.

6

The big knowledge test

20 questions with points and a star rating.

Notes for adults

The modules explain electrical hazards without practical mains-voltage experiments. For real experiments, use only approved educational kits with touch-safe extra-low voltage, suitable components, and adult supervision.

Technical sources for safety information

VDE: Children and Electricity; DGUV: Five Safety Rules; German Federal Office of Civil Protection and Disaster Assistance: Behaviour During Thunderstorms; VDE study on electrical accidents in bathtubs. Compilation updated July 2026.