Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field Like magnetic poles attract, while unlike poles repel Like magnetic poles repel, while unlike poles attract None of these Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field Like magnetic poles attract, while unlike poles repel Like magnetic poles repel, while unlike poles attract None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? 100 A 0.1 A 0.41666666666667 1000 A None of these 100 A 0.1 A 0.41666666666667 1000 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a series RLC circuit: None of these is minimum at the resonant frequency always decreases as the applied frequency increases always increases as the applied frequency increases is maximum at the resonant frequency None of these is minimum at the resonant frequency always decreases as the applied frequency increases always increases as the applied frequency increases is maximum at the resonant frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has No holes many holes many free electrons a few free electrons and holes None of these No holes many holes many free electrons a few free electrons and holes None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following kinds of materials has the highest permeability? A ferromagnetic material A diamagnetic material None of these All of these A paramagnetic material A ferromagnetic material A diamagnetic material None of these All of these A paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current is The number of free electrons in an atom None of these The force that causes electrons to flow The flow of charged particles through a material An imbalance of electrical charges The number of free electrons in an atom None of these The force that causes electrons to flow The flow of charged particles through a material An imbalance of electrical charges ANSWER DOWNLOAD EXAMIANS APP
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