With increasing biasing voltage of a photodiode, the photocurrent magnitude: (a) Increases initially and after attaining certain value, it decreases (b) Increases linearly (c) Increases initially and saturates finally (d) Remains constant

Answer: (c). In reverse bias, increasing the voltage first helps collect more photo-generated carriers, so the photocurrent rises. Once all generated carriers are collected, the current depends only on light intensity and stays constant. So the answer is (c) increases initially and saturates finally.

With increasing biasing voltage of a photodiode, the photocurrent… | JEE Main 2020 (5 Sep, Shift 1)

Q74JEE Main 2020 · 5 SEP · SHIFT 1Medium

Special Purpose Diodes

With increasing biasing voltage of a photodiode, the photocurrent magnitude:

Show answer and solution

Answer: (c)

In reverse bias, increasing the voltage first helps collect more photo-generated carriers, so the photocurrent rises.
Once all generated carriers are collected, the current depends only on light intensity and stays constant.
So the answer is (c) increases initially and saturates finally.

Report a mistake

Special Purpose Diodes question from JEE Main 2020 (5 Sep, Shift 1)

More questions on Special Purpose Diodes