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  4. For the circuit shown below, the zener current is <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-zshrjuahhcr7kan4.jpg />

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Q. For the circuit shown below, the zener current is
Question

NTA AbhyasNTA Abhyas 2022

Solution:

Solution
Current through the load, $I_{L}=\frac{40}{20 \times 10^{3}}=2mA$
Current through the battery, $I=\frac{80 - 40}{2 \times 10^{3}}=20mA$
Current through the zener diode, $I_{2}=I-I_{L}=18mA$