Electronic Principles
A high-pass filter:

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

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Electronic Principles
Which one of the following statements is true for current flowing in a parallel circuit?

The amount of current flow through each branch of a parallel circuit can be different, depending on the resistance of each branch part and the amount of voltage applied to it
The total current in a parallel circuit is equal to the total voltage multiplied by the total resistance
The same current always flows through every part of a parallel circuit
None of these
The total current in a parallel circuit is always less than the smallest amount of current

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Electronic Principles
In a pure inductor:

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
ac current and voltage are exactly in phase

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