Electronic Principles
What are the main parts of an atom?

Electrons, protons, and ions
Protons only
Electrons, ions, and neutrons
Electrons, protons, and neutrons
None of these

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Electronic Principles
Molecule is

A atom that has a shortage of electrons in its outer orbit
None of these
The smallest particle of a substance that retains the properties of that substance
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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Electronic Principles
Which one of the following phrases best describes residual magnetism?

The amount of magnetic flux that is not confined to the core material of an electromagnet
Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
The circular magnetic field that surrounds a conductor carrying a current
None of these
The force of attraction between the poles of a permanent and temporary magnetic field

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