Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? The voltage remains at one polarity and at a steady level The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time None of these The voltage reverses polarity periodically The voltage remains at one polarity and at a steady level The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time None of these The voltage reverses polarity periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The valence electron of a copper atom experiences what kind of attraction toward the nucleus? Neutral Strong Impossible to say None of these Weak Neutral Strong Impossible to say None of these Weak ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? 122 W 64 W 6 W None of these 3 W 122 W 64 W 6 W None of these 3 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the difference between a conductor and an insulator? The difference between conductors and insulators depends on how they are used An insulator allows current to flow much easier than a conductor does None of these A conductor allows current to flow much easier than an insulator does An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all The difference between conductors and insulators depends on how they are used An insulator allows current to flow much easier than a conductor does None of these A conductor allows current to flow much easier than an insulator does An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The merging of a free electron and a hole is called Lifetime Recombination None of these Thermal energy Covalent bonding Lifetime Recombination None of these Thermal energy Covalent bonding ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has a few free electrons and holes None of these many holes many free electrons No holes a few free electrons and holes None of these many holes many free electrons No holes ANSWER DOWNLOAD EXAMIANS APP
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