Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 68

70. A transistor is operated in common emitter configuration at VC=2V such that a change in the base current from 100μA to 300μA produces a change in the collector current from 10mA to 20mA. The current gain is

(a) 50

(b) 75

(c) 100

(d) 25

[2011]

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Answer:

Correct Answer: 70. (a)

Solution:

  1. (a) The current gain

β=ΔICΔIB=10mA200μA=10×103200=50



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