Electronic Principles Current is The force that causes electrons to flow The flow of charged particles through a material The number of free electrons in an atom None of these An imbalance of electrical charges The force that causes electrons to flow The flow of charged particles through a material The number of free electrons in an atom None of these An imbalance of electrical charges ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Ohmmeter Wattmeter None of these Voltmeter Ammeter Ohmmeter Wattmeter None of these Voltmeter Ammeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: cuts the total current by one-half has no effect on the total circuit current thrice the amount of total current doubles the amount of total current None of these cuts the total current by one-half has no effect on the total circuit current thrice the amount of total current doubles the amount of total current None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The north pole of a magnet is the one: that would be repelled by the south pole of another magnet None of these that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole that would be attracted to the earth's north magnetic pole that would be repelled by the south pole of another magnet None of these that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole that would be attracted to the earth's north magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? 250 µA 300 µA 350 µA None of these 0.25 µA 250 µA 300 µA 350 µA None of these 0.25 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 12 V None of these 18 V 24 V 30 V 12 V None of these 18 V 24 V 30 V ANSWER DOWNLOAD EXAMIANS APP
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