Search any question & find its solution
Question:
Answered & Verified by Expert
A Zener diode having break down voltage $\mathrm{Vz}=6 \mathrm{~V}$ is used in a voltage regulator circuit as shown in the figure. The minimum current required to pass through the Zener to act as a voltage regulator is $10 \mathrm{~mA}$ and maximum allowed current through Zener is $40 \mathrm{~mA}$. The maximum value of $R_{\mathrm{s}}$ for Zener to act as a voltage regulator is
Options:
Solution:
2922 Upvotes
Verified Answer
The correct answer is:
$400 \Omega$
Minimum current $=10 \mathrm{~mA}\left(\mathrm{I}_{\mathrm{L}}=0\right)$
$$
\mathrm{R}_{\mathrm{S}}=\frac{\mathrm{V}}{\mathrm{l}}=\frac{4 \mathrm{~V}}{10 \mathrm{~mA}}=400 \Omega
$$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.