Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 75

77. In the case of a common emitter transistor amplifier, the ratio of the collector current to the emitter current Ic/Ie is 0.96 . The current gain of the amplifier is

(a) 6

(b) 48

(c) 24

(d) 12

[2002]

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Answer:

Correct Answer: 77. (c)

Solution:

  1. (c) IcIe=0.96

Ic=0.96Ie But Ie=Ic+Ib=0.96Ie+Ib

Ib=0.04Ie

Current gain, β=IcIb=0.96Ie0.04Ie=24



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