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For a Fixed bias circuit having RC=2.2KΩ, RB=240Ω, VCC=12v and current amplification factor is 100 and the current flowing through the base is 20µA, the value if Collector current in saturation is_____________

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For a Fixed bias circuit having RC=2.2KΩ, RB=240Ω, VCC=12v and current amplification factor is 100 and the current flowing through the base is 20µA, the value if Collector current in saturation is_____________

(a) 5.4mA

(b) 3mA

(c) 1mA

(d) 0A

The question was posed to me in semester exam.

This interesting question is from The Operating Point in chapter Transistor Biasing and Thermal Stabilization of Electronic Devices & Circuits

1 Answer

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The correct choice is (a) 5.4mA

The explanation: Vce = VCC – IC RC

For saturation, Vce = 0                                                                                                                                        ICsat = VCC/RC = 5.4mA.

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