Electronic Principles
What is the smallest number of polarities required for current flow?

One - a negative terminal
Three - negative, positive and neutral terminals
None of these
Four - two negative and two positive
Two - a negative terminal and a positive terminal

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Electronic Principles
What is a negative ion?

An atom that contains more protons than neutrons
An atom that contains more protons than electrons
An atom that contains more electrons than protons
None of these
An atom that contains more electrons than neutrons

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Electronic Principles
Which one of the following principles best describes the basic operation of a generator?

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

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