Transfer characterstics [output voltage `(V_(o))` vs. input voltage `(V_(i))`] for a base biased transistor in `CE` configuration is as shown in the figure. For using transfor as a which, it is used

Options

A. in region III
B. both in region (I) and (III)
C. in region II
D. in region I

Answer

B

Explanation

For using transistor as a switch, we should use cut off region (I) for ON state and saturation region (III), for OFF state of transfer characteristics. The region (II) of transfer characteristic is an active region used as an amplifier.