Electronic Principles
In a pure inductor:

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

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Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

Resistances provide the only opposition to current flow
Combinations of resistance and capacitive reactance provide any opposition to current flow
Capacitive reactance provides the only opposition to current flow
None of these
The ac voltage leads the current by 90 degree

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