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

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

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Electronic Principles
What is a negative ion?

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

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Electronic Principles
Molecule is

The smallest particle of a substance that retains the properties of that substance
None of these
A atom that has a shortage of electrons in its outer orbit
A atom that has an excessive number of electrons in its outer orbit
A atom that flows whenever there is an imbalance of electrical charges between two points

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