Question

In a p-n-p transistor biased in the active region, in the base, holes
(A). Drift
(B). Diffuse and recombine
(C). Experience avalanche multiplication
(D). Are injected from the collector

Answer 1

Hint: The transistor in which a N type plate is sandwiched between two p types plate is called a p-n-p transistor. The active region of a transistor is the region between cutoff and saturation. Holes made collusion in this region.

Complete step by step answer:
In a p-n-p transistor, there are two positive plates and one negative plate is sandwiched between them. When the transistor is biased in an active region then in that case the holes of the transistor make collusion with each other and they recombine and diffuse into each other. The current produced due to this recombination of the holes is called the recombination current in PN junction diodes.
Therefore, in a p-n-p transistor, in the base holes are diffuse and recombine.

So, the correct answer is “Option B”.

Additional Information:
 A PN junction diode is the most commonly used device in the field of electronics. There are two types of diodes one in p-n-p and the other is n-p-n diode. In a p-n-p diode a negative plate is sandwiched between two positive plates while in n-p-n it is vice-versa.

Note:
Always keep in mind that holes having positive charges while the electrons having the negative charges and in the p-n-p transistor a negative plate is kept between the two positive plates while in the n-p-n transistor a positive plate is kept between two negative plates.