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?

24.2 mA
28.4 mA
68.4 mA
None of these
34.4 mA

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Electronic Principles
Molecule is

The smallest particle of a substance that retains the properties of that substance
A atom that has an excessive number of electrons in its outer orbit
A atom that has a shortage of electrons in its outer orbit
A atom that flows whenever there is an imbalance of electrical charges between two points
None of these

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