Electronic Principles
Doubling the operating voltage of a purely capacitive circuit:

multiplies the capacitive reactance by 7
cuts the capacitive reactance in half
has no effect on the capacitive reactance
None of these
doubles the amount of capacitive reactance

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit flows in one direction at a steady level
The current in an ac circuit flows in two directions at the same time
The current in an ac circuit changes direction periodically
None of these

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
cuts the current through the inductors one-half
has no effect on the current through the inductors
doubles the amount of current through the inductors
None of these

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