Question

The phenomenon known as “Early Effect” in a bipolar transistor refers to a reduction of the effective base-width caused by

(A) Electron - hole recombination at the base

(B) The reverse biasing of the base-collector junction

(C) The forward biasing of the emitter-base junction

(D) The early removal of stored base charge during saturation-to-cut off switching.

Answer 1

The correct answer B

Explanation:

The reverse biasing of the base-collector junction.

In the case of discussion of Early Effect in a bipolar transistor, there happens a reduction because of the reverse biasing of the base-collector junction, and it leads to a reduction in the effective base width.

This can be explained as reverse biasing of the base means the relationship of how there is a negative direction which denotes that emitter junction is reverse biased. This causes electron-hole pairs to be generated. And while the electrons flow to the collector it makes the holes not able to flow out of the base contact.