Electronic Principles
When operating above its resonant frequency, a series RLC circuit has the characteristics of a:

purely resistive circuit
series RC circuit
None of these
series RL circuit
series RLC circuit operated below its resonant frequency

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Electronic Principles
Which one of the following phrases best describes residual magnetism?

Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
The circular magnetic field that surrounds a conductor carrying a current
The force of attraction between the poles of a permanent and temporary magnetic field
None of these
The amount of magnetic flux that is not confined to the core material of an electromagnet

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

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

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