NEET2009PhysicsSemiconductorsActual
A transistor is operated in common-emitter configuration at V_c=2 volt such that a change in the base current from 100 A to 200 A produces a change in the collector current from 5 ~mA to 10 ~mA . The current gain is
Options
- A75
- B100
- C150
- D50
Correct answer
D. 50
Step-by-step solution
For a transistor aligned & where array l I _ E = I _ B + I _ C I _ E = emitter current I _ B = base current I _ C = collector current and current gain = I _ C I _ B I _ C =5 10⁻³ ~A I _ B =100 10⁻⁶ ~A = 5 100 1000=50 array aligned