Consider the following statements: 1. The β of a bipolar

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Consider the following statements:
1. The β of a bipolar transistor reduces if the base width is increased.
2. The β of a bipolar transistor increases if the doping concentration in the base is increased. Which one of the following is correct?

1. 1 is FALSE and 2 is TRUE
2. Both 1 and 2 are TRUE
3. Both 1 and 2 are FALSE
4. 1 is TRUE and 2 is FALSE

Correct Option: D

The β of a bipolar transistor reduces if the base width is increased because

β =	I_c
	i_b

and base current Ib can be reduces by increasing base width or decreasing doping concentration in the base, resulting increase in β of bipolar transistor. However, the β of a bipolar transistor reduces if the doping concentration in the base region is increased. Therefore statement 1 is TRUE and 2 is FALSE.