Question

In a reverse biased diode when the applied voltage changes by $1\, V$, the current is found to change by $0.5\, \mu\,A$ . The reverse bias resistance of the diode is

• A. $2 \Omega$
• B. $200 \Omega$
• C. $2 \times10^6 \Omega$
• D. $2\times10^{5} \Omega$

Answer 1

Answer: (C)

$2 \times10^6 \Omega$

Answer 2

Reverse resistance $= \frac{\Delta V}{\Delta I}$ $= \frac{ 1}{0.5 \times10^{-6}}$ $= 2 \times10^{6} \Omega$