Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Like magnetic poles repel, while unlike poles attract None of these Like magnetic poles attract, while unlike poles repel Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field Like magnetic poles repel, while unlike poles attract None of these Like magnetic poles attract, while unlike poles repel Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The net charge of a neutral copper atom is -1 4 1 None of these -1 4 1 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: None of these thermocouple solar cell chemical cell piezoelectric devices None of these thermocouple solar cell chemical cell piezoelectric devices ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Positive ions are atoms that have Lost an electron Gained an electron Gained a proton None of these Lost a proton Lost an electron Gained an electron Gained a proton None of these Lost a proton ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz? 1590 Ohm less than 1 Ohm None of these 312 Ohm 690 Ohm 1590 Ohm less than 1 Ohm None of these 312 Ohm 690 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.75 mA 3.2 mA 0.05 mA None of these 13 mA 3.75 mA 3.2 mA 0.05 mA None of these 13 mA ANSWER DOWNLOAD EXAMIANS APP
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