Electronic Principles
Voltage is

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

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

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

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