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

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Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

inductive reactance is equal to the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance
inductive reactance is greater than the capacitive reactance
None of these
capacitive reactance is greater than the inductive reactance

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Electronic Principles
Molecule is

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
The smallest particle of a substance that retains the properties of that substance
None of these

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Electronic Principles
Which one of the following principles best describes the basic operation of an electromagnet?

None of these
Like magnetic poles repel, while unlike poles attract
Current flowing through a conductor generates a magnetic field
Current is induced in a conductor that is moving through a magnetic field
Like magnetic poles attract, while unlike poles repel

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