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Question
An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?
Options:
A .  68.4 mA
B .  24.2 mA
C .  28.4 mA
D .  None of these
E .  34.4 mA
Answer: Option B
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