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

Free electrons
None of these
Doping
Thermal energy
Valence electrons

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Electronic Principles
What is a negative ion?

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

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