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?

68.4 mA
24.2 mA
28.4 mA
None of these
34.4 mA

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Electronic Principles
A farad is defined as the amount of capacitance necessary for:

dissipating 1 W of power
storing 1 V for 1 second
None of these
changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
causing an ac phase shift greater than 90 degree

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Electronic Principles
Molecule is

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

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