💡 Light the bulb: circuits

Unit 1 · Hands-on science lab · 12 min

Current needs a closed loop: battery → wire → bulb → wire → back. Break the loop (open switch) and the bulb goes out. Series = one path; parallel = several paths.

Words in this lesson

• 电池 (diànchí) — battery
• 电路 (diànlù) — circuit
• 开关 (kāiguān) — switch

Build battery + bulb + switch in the simulation.

Project: Pick 5 household items, guess which conduct, then test in the simulation.