A transistor is operated in common emitter configuration at constant collector voltage Vc = 1.5 V such that a change in the base current from 100 μA to 150 μA produces a change in the collector current from 5 mA to 10 mA. The current gain (β) is :

Question

Dr. Abubacker · Accepted Answer

[Solution from source] Current gain in CE mode is β = ΔI_C/ΔI_B = (10 − 5) mA/(150 − 100) μA = 5 × 10⁻³/50 × 10⁻⁶ = 100. Dividing the final values (10 mA/150 μA ≈ 67) instead of the changes does not give β. Answer (3).

Q. A transistor is operated in common emitter configuration at constant collector voltage Vc = 1.5 V such that a change in the base current from 100 μA to 150 μA produces a change in the collector current from 5 mA to 10 mA. The current gain (β) is :

Explanation

Reviewed by Dr. Abubacker

Want to attempt the full paper?