Electronic Principles
A farad is defined as the amount of capacitance necessary for:

changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
None of these
causing an ac phase shift greater than 90 degree
storing 1 V for 1 second
dissipating 1 W of power

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

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

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Electronic Principles
The total capacitance of a series capacitor circuit is:

None of these
equal to the sum of the individual capacitance values
equal to the sun of the individual capacitive-reactance values
equal to the source voltage divided by total current
less than the value of the smallest capacitor

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