Electronic Principles What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W? 692.2 Ohm 3890 Ohm 844.5 Ohm 1234 Ohm None of these 692.2 Ohm 3890 Ohm 844.5 Ohm 1234 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
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 Like magnetic poles attract, while unlike poles repel Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract, while unlike poles repel Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic silicon crystal acts approximately like a battery an insulator a piece of copper wire None of these a conductor a battery an insulator a piece of copper wire None of these a conductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current is An imbalance of electrical charges The force that causes electrons to flow The flow of charged particles through a material None of these The number of free electrons in an atom An imbalance of electrical charges The force that causes electrons to flow The flow of charged particles through a material None of these The number of free electrons in an atom ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? P = E2/R P = IE P = I2R I = P/E None of these P = E2/R P = IE P = I2R I = P/E None of these 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 an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material None of these ANSWER DOWNLOAD EXAMIANS APP