Electronic Principles
For a pure capacitor:

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

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Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

the difference between inductive and capacitive reactance is equal to the resistance
None of these
capacitive reactance is greater than the inductive reactance
inductive reactance is greater than the capacitive reactance
inductive reactance is equal to the capacitive reactance

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Electronic Principles
In a pure inductor:

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

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