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
dissipating 1 W of power
storing 1 V for 1 second

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Electronic Principles
Voltage is

The flow of charged particles through a material
The number of free electrons in an atom
The smallest electrically charged particle
Trie force that causes electrons to flow
None of these

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Electronic Principles
Which one of the following principles best describes the basic operation of an electromagnet?

Current is induced in a conductor that is moving through a magnetic field
Like magnetic poles attract, while unlike poles repel
Current flowing through a conductor generates a magnetic field
None of these
Like magnetic poles repel, while unlike poles attract

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