Electronic Principles
An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

None of these
Thermal energy
Free electrons
Valence electrons
Doping

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Electronic Principles
What is a negative ion?

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

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Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

inductive reactance is greater than the capacitive reactance
None of these
inductive reactance is equal to the capacitive reactance
capacitive reactance is greater than the inductive reactance
the difference between inductive and capacitive reactance is equal to the resistance

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Electronic Principles
The north pole of a magnet is the one:

that would be attracted to the earth's north magnetic pole
that would be attracted to the earth's south magnetic pole
None of these
that has its molecules arranged in a random pattern
that would be repelled by the south pole of another magnet

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