In the given circuit if the power rating of Zener diode is $10 \mathrm{~mW}$, the value of series resistance $R_s$ to regulate the input unregulated supply is :

Question

$10 \mathrm{k} \Omega$

$10 \Omega$

$1 \mathrm{k} \Omega$

$\frac{3}{7}\,\text{k}\Omega < R_s < \frac{3}{5}\,\text{k}\Omega$

Solution

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