A zener is breakdown voltage \( V_{Z}=8 \mathrm{~V} \) and maximum zener current \( I_{Z M}=10 \...

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A zener is breakdown voltage \( V_{Z}=8 \mathrm{~V} \) and maximum zener current \( I_{Z M}=10 \mathrm{~mA} \) is subjected to an input voltage \( V_{i}=10 \mathrm{~V} \) with series resistance. The ratio of maximum and minimum value of \( R_{L} \) is
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