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

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

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Electronic Principles
The total capacitive reactance of a parallel capacitor circuit is:

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

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Electronic Principles
Which one of the following phrasers best describes flux density?

The force that maintains lines of force
The opposition to a build-up of magnetic fields
None of these
The concentration of lines of magnetic force
The rate of change of the number of lines of magnetic force

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