Electronic Principles
Which one of the following statements best applies to a series RLC circuit?

All of these
The voltage waveform for each component always has the same amplitude and phase as the applied voltage
None of these
The sum of the current is always less than the applied current
The current waveform for each component always has the same amplitude and phase as the applied current

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Electronic Principles
In a pure inductor:

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

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Electronic Principles
A low-pass filter:

has no effect on ac signals
passes higher-frequency signals and reduces lower-frequency signals
passes lower-frequency signals and reduces higher-frequency signals
reduces the level of all frequencies by a significant amount
None of these

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