Electronic Principles
The total impedance of a parallel RLC circuit:

always decreases as the applied frequency increases
is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
None of these
is maximum at the resonant frequency
always increases as the applied frequency increases

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

doubles the amount of current through the inductors
cuts the current through the inductors one-half
None of these
has no effect on the current through the inductors
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit

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Electronic Principles
What is a negative ion?

An atom that contains more protons than electrons
None of these
An atom that contains more electrons than protons
An atom that contains more protons than neutrons
An atom that contains more electrons than neutrons

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