Electronic Principles Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it? None of these I = E/R I = ER E = I2R E = PR None of these I = E/R I = ER E = I2R E = PR 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 690 Ohm 312 Ohm 1590 Ohm less than 1 Ohm None of these 690 Ohm 312 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is a free electron? None of these An electron that has twice the amount of charge of a normal electron An electron that has been freed from its parent atom An electron that has no electrical charge An electron that costs nothing None of these An electron that has twice the amount of charge of a normal electron An electron that has been freed from its parent atom An electron that has no electrical charge An electron that costs nothing ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of a generator? Like magnetic poles repel; unlike poles attract None of these Like magnetic poles attract; 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; unlike poles attract None of these Like magnetic poles attract; 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 core of an electromagnet is said to be in saturation when: changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material None of these an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material None of these an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Decreases Increases None of these Stays the same 0oC Decreases Increases None of these Stays the same 0oC ANSWER DOWNLOAD EXAMIANS APP
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