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 s 48 s 0.48 μs 0.48 ms 0.48 s 48 s 0.48 μs 0.48 ms ANSWER DOWNLOAD EXAMIANS APP
Inductors The inductance of an iron-core coil decreases if the length of the coil decreases the number of turns is decreased None of these the iron core is removed the length of the coil decreases the number of turns is decreased None of these the iron core is removed ANSWER DOWNLOAD EXAMIANS APP
Inductors Three 15 mH inductors are in series. The total inductance is 15 mH 5 mH 45 mH 30 mH 15 mH 5 mH 45 mH 30 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? 400 mA 91 mA 57 mA 78 mA 400 mA 91 mA 57 mA 78 mA 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 VR ≥ VL VL > VR VL < VR VL = VR VR ≥ VL VL > VR VL < VR VL = VR ANSWER DOWNLOAD EXAMIANS APP
Inductors When the current through an inductor decreases, the amount of energy stored in the electromagnetic field doubles remains the same increases decreases doubles remains the same increases decreases ANSWER DOWNLOAD EXAMIANS APP
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