Electronic Principles
For a pure capacitor:

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

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

The voltage always has the same amplitude and phase for every part of the circuit
The total voltages is equal to the sum of the voltages across the resistance and inductance
The total voltage lags the total current by less than 90
None of these
The total voltage is less than the sum of the voltages across the resistance and inductance

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