Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

10.17 V
0.17 V
20 V
None of these
18.8 V

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

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

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Electronic Principles
What is a free electron?

An electron that has no electrical charge
An electron that has been freed from its parent atom
An electron that costs nothing
An electron that has twice the amount of charge of a normal electron
None of these

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Electronic Principles
The total inductive reactance of a parallel inductor circuit is:

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

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