Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these Like magnetic poles attract, while unlike poles repel 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 repel, while unlike poles attract None of these Like magnetic poles attract, while unlike poles repel Current is induced in a conductor that is moving through a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is a free electron? An electron that has no electrical charge An electron that has twice the amount of charge of a normal electron An electron that costs nothing An electron that has been freed from its parent atom None of these An electron that has no electrical charge An electron that has twice the amount of charge of a normal electron An electron that costs nothing An electron that has been freed from its parent atom None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of Kirchhoffs current law? The current through a resistance is proportional to the value of resistance and the IR drop across it The algebraic sum of currents entering and leaving a point is equal to zero None of these The total current in a parallel circuit is less than the value of the smallest current The algebraic sum of currents in a loop is equal to zero The current through a resistance is proportional to the value of resistance and the IR drop across it The algebraic sum of currents entering and leaving a point is equal to zero None of these The total current in a parallel circuit is less than the value of the smallest current The algebraic sum of currents in a loop is equal to zero ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductance of a series inductor circuit is: equal to the sum of the individual inductive-reactance values None of these equal to the source voltage divided by total current equal to the sum of the individual inductance values less than the value of the smallest inductor equal to the sum of the individual inductive-reactance values None of these equal to the source voltage divided by total current equal to the sum of the individual inductance values less than the value of the smallest inductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Positive ions are atoms that have Gained an electron Lost a proton None of these Lost an electron Gained a proton Gained an electron Lost a proton None of these Lost an electron Gained a proton ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the: armature rotor None of these commutator battery armature rotor None of these commutator battery ANSWER DOWNLOAD EXAMIANS APP
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