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Analog circuits miscellaneous

  1. The transistor in the circuit shown is operating in

    1. cut-off region
    2. active region
    3. saturation region
    4. either in the active or saturation region
Correct Option: C

From the figure,

IB =
5 - VBE
=
4.2
= 4.2 mA
100 K100 K

Ic =
4.8
mA
5

Since (IB)min =
Ic
≤ IB ,
hFE

hence the transistor will operate in saturation region.



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