Question
A transistor is used in common emitter mode as an amplifier. Then
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Answer
(d)The circuit of a $ CE$ amplifier is as shown below
This has been shown a $ NPN$ transistor. Therefore base emitter are forward, biased and input signal is connected between base and emitter.
This has been shown a $ NPN$ transistor. Therefore base emitter are forward, biased and input signal is connected between base and emitter.
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