File:Copper_cathode_2.svg · Wikimedia Commons · See Wikimedia Commons
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Sign in to savethumb|Diagram of a copper cathode in a [[galvanic cell (e.g. a battery). Positively charged cations move towards the cathode allowing a positive current i to flow out of the cathode.]]
AI overview
A cathode is the positive terminal in a battery or similar device where positively charged particles are attracted and where electric current flows out. It matters because it's one of the two essential parts of a battery that makes electrical current flow, which powers everything from flashlights to electronics.
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- Cathodes
- opposite of
- anode
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