Electronic Principles
Norton's theorem replaces a complicated circuit facing a load by an

Ideal current source and series resistor
None of these
Ideal current source and parallel resistor
Ideal voltage source and parallel resistor
Ideal voltage source and series resistor

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

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
Hysteresis is most apparent when the core material is saturated
None of these
Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet

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