Inductors When the current through an inductor decreases, the amount of energy stored in the electromagnetic field decreases doubles remains the same increases decreases doubles remains the same increases 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? 400 mA 91 mA 78 mA 57 mA 400 mA 91 mA 78 mA 57 mA ANSWER DOWNLOAD EXAMIANS APP
Inductors Two 10 H inductors are in parallel and the parallel combination is in series with a third 10 H inductor. What is the approximate total reactance when a voltage with a frequency of 7 kHz is applied across the circuit terminals? 1.3 MΩ 66 kΩ 660 kΩ 219 kΩ 1.3 MΩ 66 kΩ 660 kΩ 219 kΩ ANSWER DOWNLOAD EXAMIANS APP
Inductors The inductance of an iron-core coil decreases if None of these the length of the coil decreases the number of turns is decreased the iron core is removed None of these the length of the coil decreases the number of turns is decreased the iron core is removed ANSWER DOWNLOAD EXAMIANS APP
Inductors An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then VL = VR VR ≥ VL VL > VR VL < VR VL = VR VR ≥ VL VL > VR VL < VR ANSWER DOWNLOAD EXAMIANS APP
Inductors A 320 H coil is in series with a 3.3 k resistor. How long does it take for current to build up to its full value? 0.48 ms 0.48 μs 48 s 0.48 s 0.48 ms 0.48 μs 48 s 0.48 s ANSWER DOWNLOAD EXAMIANS APP
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