Communication System Question 1

Question: When a silicon PN junction is in forward biased condition with series resistance, it has knee voltage of 0.6 V. Current flow in it is 5 mA, when PN junction is connected with 2.6 V battery, the value of series resistance is

Options:

A) $ 100\Omega $

B) $ 200\Omega $

C) $ 400\Omega $

D) $ 500\Omega $

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ R=\frac{(2.6-0.6)}{5\times {{10}^{-3}}}=400\Omega $