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A cathode is negative. It attracts cations, which are positively charged.

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0n an LED what are the names of the positive and the negative leg?

Anode and cathode. Anode = negative lead, cathode = positive lead.


Why is there a plus and minus of batteries?

plus is the positive terminal (cathode) minus is the negative terminal (anode)


What are the two ways to determine the negative leg in a led?

To determine the negative leg of a LED, you can look for the longer lead (anode), which is typically the positive leg, while the shorter lead (cathode) is the negative leg. Additionally, the flat edge on the LED's body usually indicates the cathode side, further confirming which leg is negative.


What is the positive and negative ends of a power source called?

The positive end of a power source is called the "anode," while the negative end is referred to as the "cathode." In batteries, the anode is where oxidation occurs, releasing electrons, and the cathode is where reduction takes place, accepting those electrons. This flow of electrons from the anode to the cathode generates electric current. The terms can vary in different contexts, such as in electrochemical cells versus electronic components.


What way round do v and 0v go on a LED?

On a standard LED, the longer lead (anode) is the positive side (v), while the shorter lead (cathode) is the negative side (0v). The cathode is usually marked with a flat edge on the LED casing. When connecting the LED in a circuit, ensure the anode is connected to the positive voltage and the cathode to ground or the negative side. This orientation allows the LED to light up when the circuit is powered.