Electronic Principles
In a pure inductor:

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

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

peak the current and round off the voltage waveforms
round off both the voltage and current waveforms
peak both the voltage and current waveforms
peak the voltage and round off the current waveforms
None of these

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