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

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

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Electronic Principles
For a pure capacitor:

ac current and voltage are exactly in phase
ac current lags the voltage by 90 degree
None of these
ac current is converted to dc voltage
ac current leads the voltage by 90 degree

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Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
The higher the amplitude of a waveform, the higher its frequency
The actual frequency of a sine waveform is 1.41 times the working frequency
None of these
The longer the period of a waveform, the lower its frequency

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