Electronic Principles
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?

34.4 mA
28.4 mA
68.4 mA
None of these
24.2 mA

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Electronic Principles
The total inductance of a series inductor circuit is:

equal to the sum of the individual inductance values
equal to the sum of the individual inductive-reactance values
less than the value of the smallest inductor
None of these
equal to the source voltage divided by total current

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