Voltmeter und submarine: was sie gemeinsam haben

1. Schritt 1. Voltmeter — funktioniert wie — Amperemeter. They are built alike, but an ammeter goes in series with the circuit and a voltmeter in parallel.
2. Schritt 2. Amperemeter — nutzt — Gleichstrom. In a school circuit the ammeter shows the direct current from the battery.
3. Schritt 3. Gleichstrom — wird verwendet in — Voltaic pile. It produces direct current.
4. Schritt 4. Voltaic pile — entwickelte sich zu — Lead–acid battery. Planté’s battery developed the idea of a chemical current source by making it rechargeable.
5. Schritt 5. Lead–acid battery — ist Teil von — Submarine. Underwater, electric motors run on batteries.

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