Electronic Principles
At room temperature an intrinsic semiconductor has

No holes
many free electrons
None of these
many holes
a few free electrons and holes

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Electronic Principles
The total capacitance of a series capacitor circuit is:

equal to the sun of the individual capacitive-reactance values
equal to the source voltage divided by total current
None of these
less than the value of the smallest capacitor
equal to the sum of the individual capacitance values

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Electronic Principles
Which one of the following statements best describes magnetic hysteresis?

Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet
None of these
Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet
Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently
Hysteresis is most apparent when the core material is saturated

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