A transistor has a current amplification factor (current gain) of 50. In a common emitter amplifier circuit, the collector resistance is chosen as `5O

Question

A transistor has a current amplification factor (current gain) of 50. In a common emitter amplifier circuit, the collector resistance is chosen as `5O

A transistor has a current amplification factor (current gain) of 50. In a common emitter amplifier circuit, the collector resistance is chosen as `5Omega` and the input resistance is `1Omega`. The output voltage if input voltage is 0.01 V is
A. -2 V
B. `-5 V`
C. -2.5 V
D. -1 V

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
The voltage gain of a common emitter amplifier
`A_v=-(betaR_o)/R_i " " or " " V_o/v_i= - (betaR_C)/(R_B)`
Output voltage,
`therefore V_o=-(betaR_CV_i)/(R_B)=-(50xx5xx0.01)/1=-2.5 V`

4 views Answered 2023-02-05 15:29