Electronic Principles
Which one of the following statements applies to common auto batteries?

Auto batteries are primary wet-cell batteries
None of these
Auto batteries are secondary wet-cell batteries
Auto batteries are primary dry-cell batteries
Auto batteries are secondary dry-cell batteries

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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
None of these
Hysteresis is the amount of magnetic flux that is not confined to the core material 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

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Electronic Principles
The south pole of a magnet is the one:

that would be attracted to the earths north magnetic pole
None of these
that has its molecules arranged in a random pattern
that would be attracted to the earth's south magnetic pole
that would be repelled by the north pole of another magnet

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