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

The ac voltage lags the current by 90 degree
Resistances provide the only opposition to current flow
None of these
Combinations of resistance and inductive reactance provide any opposition to current flow
Inductive reactance provides the only opposition to current flow

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

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

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Electronic Principles
A high-pass filter:

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

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