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Question
Explain, with the help of a circuit diagram, the working of n-p-n transistor as a common emitter amplifier.
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When a p-type impurity is doped in a semiconductor, a large number of holes are created, This does not make the semiconductor charged. But when holes diffuse from the p-side to the n-side in a p-n junction, the n-side gets positively charged. Explain.
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