K Kapnula
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Lesson 6 · grade 7–9

Electricity: current, voltage, circuits

📖 Lesson ──▶ 🎯 Quiz — pick the translation ──▶ ✅ Lesson done
🔋💡Closed circuit — bulb lights

Current is electrons moving through wires — like water through pipes: voltage (V) is pressure, current (A) the flow, resistance (Ω) the narrow part. Ohm\u2019s law: U = I × R. Parallel circuits let devices run independently (home outlets); series run through one path (old string lights — one bulb dies, all die).

⚡ Never touch an outlet or repair wiring yourself — 230 V is deadly. That is the Elektriker\u2019s job (a protected trade in Germany).
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Test yourself!
Practice the topic with the trainer — like after class
Quiz — pick the translation → 🖨 Worksheet
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