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
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
None of these
Hysteresis is most apparent when the core material is saturated

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

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

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Electronic Principles
Which one of the following statements is true for current flowing in a parallel circuit?

The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance
The total current in a parallel circuit is always less than the smallest amount of current
None of these
The same current always flows through every part of a parallel circuit

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