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The anode (negative) is red.
The cathode (positive) is black.
whoever wrote this^^^ is stupid and can't read.
while what they said is right, that only applies to wires.
with LEDs, the shorter wire i the negative, and the longer one is positive.
sometimes you might find one that's the same length, easy way to test them is to just put them to opposite ends of a battery.
What else can I help you with?
Why are LEDs different lengths?
To make it easier to see which is positive - anode, and which is negative - cathode. You need to know that, because the LED will only light if the positive and negative terminals of the battery are connected to the correct sides of the LED.
Is the short lead the cathode on an led?
Yes
What is meant by anode and cathode?
Anode is positive electrode which attracts the negative anions while cathode is the negative electrode which attracts the positive cations during electrolysis.
Is the banded end of a diode positive or negative?
The Banded end of diode represents Cathode.If you want the diode to be forward biased then the Cathode is made more negative than Anode.For reverse biasing of Diode (Zener Diode) The Cathode is kept positive.However the mail carrier of current in the Cathode is Electrons which are negative.
Cathode rays all have same negative charge?
True
How can you identify a cathode nigative to an LED?
LED has two pins,one is anode(positive) and the other is cathode(negative).The smaller pin is cathode(negative) and the longer pin is anode(positive).
What is the negative leg of an LED called?
The side of any diode that must be negative in order for the diode to conduct is the "cathode".
0n an LED what are the names of the positive and the negative leg?
Anode and cathode. Anode = negative lead, cathode = positive lead.
Which leg does current emit from in a LED?
Current flows from the anode (positive terminal) to the cathode (negative terminal) in a LED. The longer leg of the LED indicates the positive anode side, while the shorter leg represents the negative cathode side.
What is the short and long legs of LED called?
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.
What is the charge of the particle in cathode rays?
The charge of the particle in cathode rays is negative. This was determined by J.J. Thomson through his experiments with cathode ray tubes in the late 19th century, which led to the discovery of the electron.
What is the difference between anode led and cathode led?
A: A LED is a diode and like all diode they have an [anode] meaning positive terminal and a [cathode] negative terminal. Therefore the proper potential must be applied for it to behave like an LED.
Is a cathode negative in a battery?
Yes, in a battery, the cathode is negative.
How can you identify a negative leg on a LED?
the negative leg is shorter than the positive leg.
Is a cathode positive or negative?
A cathode is negative. It attracts cations, which are positively charged.
Is the cathode negative in an electrical circuit?
Yes, the cathode is negative in an electrical circuit.
Is the cathode negative in an electrochemical cell?
Yes, the cathode is negative in an electrochemical cell.
