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Question

The Zener diode has a VZ=30 V. The current passing through the diode for the following circuit is ______mA.


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Solution

Zener diode is in reverse biased, so potential drop of 30 V will appear across it.

So,
I=604×103=0.015 A

Also,
I1=305×103=0.006 A

Therefore, current through the diode,
I2=II1=0.0150.006=0.009 A=9 mA

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