A light emitting diode(LED) is a semiconductor device that emits light when an electric current flows through it. LED is a light source. It has two terminals, longer one is positive and shorter one is negative. Positive terminal of the LED connect with positive of the battery. Negative terminal of the LED connect with negative of the battery. Symbol of LED:
Transistor is a three terminal electronic component that is used to amplify the electric signal as well as used as a switch. Real view of transistors: Symbol of transistor: E = emitter B= base C= collector Terminal identification of transistor: It...
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