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

Doping
None of these
Valence electrons
Free electrons
Thermal energy

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Electronic Principles
Which one of the following statements applies to common, non-rechargeable flashlight batteries?

Common flashlight batteries are primary dry-cell batteries
Common flashlight batteries are primary wet-cell batteries
None of these
Common flashlight batteries are secondary dry-cell batteries
Common flashlight batteries are secondary wet-cell batteries

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

None of these
peak the voltage and round off the current waveforms
peak both the voltage and current waveforms
round off both the voltage and current waveforms
peak the current and round off the voltage waveforms

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