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

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

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Electronic Principles
Which one of the following phrasers best describes flux density?

The force that maintains lines of force
The opposition to a build-up of magnetic fields
The concentration of lines of magnetic force
The rate of change of the number of lines of magnetic force
None of these

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