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
34.4 mA
28.4 mA
None of these
68.4 mA

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Electronic Principles
The dielectric constant of a material is a measure of:

None of these
how well the material concentrates electrostatic lines of force
the amount of opposition to the current flow
the amount of voltage it can withstand before breaking down
how well the material concentrates magnetic lines of force

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