Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

The impedance is equal to the sum of the resistance and capacitive reactance
None of these
The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is less than the sum of the resistance and capacitive reactance
The impedance is greater than the sum of the resistance and capacitive reactance

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Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

None of these
Combinations of resistance and capacitive reactance provide any opposition to current flow
Capacitive reactance provides the only opposition to current flow
The ac voltage leads the current by 90 degree
Resistances provide the only opposition to current flow

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Electronic Principles
Which one of the following phrasers best describes flux density?

The opposition to a build-up of magnetic fields
The rate of change of the number of lines of magnetic force
The concentration of lines of magnetic force
The force that maintains lines of force
None of these

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