Electronic Principles Which one of the following statements regarding ac circuits is correct? Current leads the voltage through a resistor Current lags the voltage through a resistor None of these All of these Current and voltages are in phase through a resistor Current leads the voltage through a resistor Current lags the voltage through a resistor None of these All of these Current and voltages are in phase through a resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The force that maintains lines of force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The net charge of a neutral copper atom is 1 None of these -1 4 1 None of these -1 4 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When the collector current increases, what does the current gain do? increases any of the above decreases stays the same None of these increases any of the above decreases stays the same None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? 628 Ohm None of these Less than 1 Ohm 100 Ohm 444 Ohm 628 Ohm None of these Less than 1 Ohm 100 Ohm 444 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance None of these cuts the capacitive reactance in half doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance None of these cuts the capacitive reactance in half doubles the amount of a capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
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