Electronic Principles
What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W?

844.5 Ohm
None of these
1234 Ohm
3890 Ohm
692.2 Ohm

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

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

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Electronic Principles
A farad is defined as the amount of capacitance necessary for:

None of these
storing 1 V for 1 second
dissipating 1 W of power
causing an ac phase shift greater than 90 degree
changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing

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