principle behind trasistor as a switch
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Explanation:
It is not in syallabus. I think
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NPN Transistor as a Switch
Based on the voltage applied at the base terminal of a transistor switching operation is performed. When a sufficient voltage (Vin > 0.7 V) is applied between the base and emitter, collector to emitter voltage is approximately equal to 0. Therefore, the transistor acts as a short circuit
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