Question

A Zener diode of 5 V with a load current of $4mA$ is used. What should be the value of $R^{}$?

• A. 3.0 $k\Omega$
• B. 2.5 $k\Omega$
• C. 4.0 $k\Omega$
• D. 3.6 $k\Omega$

Answer 1

The correct option is B 2.5 $k\Omega$

$i=\frac{\Delta V}{R}orR=\frac{\Delta V}{i}=\frac{10V}{4mA}=\frac{10\times {10}^3}{4}=\frac{10\times 1000}{4}=2500\Omega =2.5k\Omega$