Electronic Principles
What is a negative ion?

An atom that contains more electrons 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 protons than neutrons

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Electronic Principles
The total inductance of a series inductor circuit is:

None of these
less than the value of the smallest inductor
equal to the source voltage divided by total current
equal to the sum of the individual inductive-reactance values
equal to the sum of the individual inductance values

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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
The circular magnetic field that surrounds a conductor carrying a current
Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
None of these
The force of attraction between the poles of a permanent and temporary magnetic field

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