Inductors Three 15 mH inductors are in series. The total inductance is 15 mH 30 mH 5 mH 45 mH 15 mH 30 mH 5 mH 45 mH ANSWER DOWNLOAD EXAMIANS APP
Inductors A switch, a 220 Ω resistor, and a 60 mH inductor are in series across a 20 V battery. What is the current through the inductor two time constants after the switch is closed? 78 mA 91 mA 400 mA 57 mA 78 mA 91 mA 400 mA 57 mA ANSWER DOWNLOAD EXAMIANS APP
Inductors A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current is increased momentarily goes to zero does not change is decreased is increased momentarily goes to zero does not change is decreased ANSWER DOWNLOAD EXAMIANS APP
Inductors The inductance of an iron-core coil decreases if the length of the coil decreases None of these the number of turns is decreased the iron core is removed the length of the coil decreases None of these the number of turns is decreased the iron core is removed ANSWER DOWNLOAD EXAMIANS APP
Inductors When the current through an inductor decreases, the amount of energy stored in the electromagnetic field increases doubles decreases remains the same increases doubles decreases remains the same ANSWER DOWNLOAD EXAMIANS APP
Inductors The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is 1.25 mV 1.8 mV 18 mV 180 mV 1.25 mV 1.8 mV 18 mV 180 mV ANSWER DOWNLOAD EXAMIANS APP
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