Modern Physics 6 Question 32

37. In an npn transistor circuit, the collector current is 10mA. If 90 of the electrons emitted reach the collector

(1992,2M)

(a) the emitter current will be 9mA

(b) the emitter current will be 11mA

(c) the base current will be 1mA

(d) the base current will be 1mA

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Solution:

  1. Given : ic=10mA=(0.9)ie [Given that ic is 90 of ie ]

ie=100.9mA11mA and ib=ieic=(1110)mA=1mA



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