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NEET · Physics · STD 12 - 14. Semicondutor electronics
A common emitter amplifier circuit is shown in the figure below. For the transistor used in the circuit the current amplification factor, \({\beta _{dc}} = 100\). Other parameters are mentioned in the figure.
- A \(V_{BE}= +18.5 V , V_{BC}= +2.85\) and amplifier is not working.
- B \(V_{BE}= +20.7 V , V_{BC}= +3.75\) and amplifier is not working.
- C \(V_{BE}= +21.5 V , V_{BC}= -2.75\) and amplifier is working.
- D \(V_{BE}= +18.2 V , V_{BC}= -3.45 \) and amplifier is working.
Answer & Solution
Correct Answer
(B) \(V_{BE}= +20.7 V , V_{BC}= +3.75\) and amplifier is not working.
Step-by-step Solution
Detailed explanation
\(\beta=100\) \(I _{ B }=\frac{ I _{ C }}{\beta}\)
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