Electronic Principles
What form of energy is used for creating static electricity?

Light energy
Mechanical energy
Chemical energy
Solar energy
None of these

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Electronic Principles
Which one of the following phrases best describes residual magnetism?

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

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

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

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Electronic Principles
Molecule is

A atom that flows whenever there is an imbalance of electrical charges between two points
A atom that has an excessive number of electrons in its outer orbit
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

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