Question:
When a transistor in CE configuration, the resistance connected at the collector circuit and base circuit are 10 \( \Omega \) and 8 \( \Omega \) respectively, if the AC current gain \( \beta_{{ac}} = 1.4 \), then the voltage amplification is
When a transistor in CE configuration, the resistance connected at the collector circuit and base circuit are 10 \( \Omega \) and 8 \( \Omega \) respectively, if the AC current gain \( \beta_{{ac}} = 1.4 \), then the voltage amplification is
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In a CE transistor configuration, the voltage amplification depends on the current gain and the ratio of collector resistance to base resistance.
Updated On: Mar 18, 2026
- 1.5
- 1.75
- 2.0
- 2.25
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The Correct Option is B
Solution and Explanation
The voltage amplification \( A_V \) in a CE configuration is given by the formula: \[ A_V = \beta_{{ac}} \times \frac{R_C}{R_B} \] Where: - \( \beta_{{ac}} = 1.4 \) - \( R_C = 10 \, \Omega \) - \( R_B = 8 \, \Omega \) Substitute the values: \[ A_V = 1.4 \times \frac{10}{8} = 1.75 \] Thus, the voltage amplification is 1.75.
Final Answer: 1.75.
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