Modern Physics 6 Question 29
34. A transistor is used in common emitter mode as an amplifier, then
$(1998,2$ M)
(a) the base emitter junction is forward biased.
(b) the base emitter junction is reverse biased.
(c) the input signal is connected in series with the voltage applied to bias the base emitter junction.
(d) the input signal is connected in series with the voltage applied to bias the base collector junction.
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Solution:
- The circuit of a common emitter amplifier is as shown.
This has been shown an $n-p-n$ transistor. Therefore, base emitter are forward biased and input signal is connected between base and emitter.
