A battery is a portable source of chemical energy, which is converted to electrical energy as soon as the battery is placed in a circuit. The main principle is the same in almost all batteries. A metal that forms the negative terminal is opposite a positive terminal. The positive terminal is also called anode, the negative terminal cathode. Between the two terminals there is an electrically conductive liquid, the so-called electrolyte. As soon as a battery is placed in a circuit, positive and negative terminals are connected via an external contact and electrolysis takes place. On the way, a current flows from anode to cathode
- Article no.: 4671727
- Targetgroups: Sek I,Sek II
- Length: 19:58 min
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