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Cathode (negative) is the shortest leg and there is a flat edge on the base of the LED, and it must be connected to the negative wire or "-" connection.

Anode (positive) is the longest leg, and must be connected to the positive wire or "+" connection, as electricity will only pass through a LED from positive to negative.

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9y ago
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1mo ago

The short leg of an LED is called the cathode, while the long leg is called the anode. The cathode is the negative terminal, and the anode is the positive terminal for the LED to function properly.

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Q: What is the short and long legs of LED called?
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