Electronic Principles
For a pure capacitor:

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

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Electronic Principles
Which one of the following statements is true for the currents in a series RC circuit?

None of these
The total current is greater than the sum of the currents for the resistance and capacitance
The total current is equal to the sum of the currents for the resistance and capacitance
The total current is less than the sum of the currents for the resistance and capacitance
The current always has the same amplitude and phase for every part of the circuit

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