Electricity: current, voltage, circuits

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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).

●German outlet: 230 V, 50 Hz
●The fuse is the circuit\u2019s "traitor": burns out and saves
●Watt = volt × amp: device power

⚡ 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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