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? 57 mA 91 mA 400 mA 78 mA 57 mA 91 mA 400 mA 78 mA ANSWER DOWNLOAD EXAMIANS APP
Inductors A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is less than 0.2 mH 55 mH less than 5.5 mH 5.5 mH less than 0.2 mH 55 mH less than 5.5 mH 5.5 mH 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 VL > VR VR ≥ VL VL = VR VL < VR VL > VR VR ≥ VL VL = VR ANSWER DOWNLOAD EXAMIANS APP
Inductors When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field does not change quadruples is quartered doubles does not change quadruples is quartered doubles ANSWER DOWNLOAD EXAMIANS APP
Inductors An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is open shorted good partly shorted open shorted good partly shorted 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 180 mV 18 mV 1.8 mV 1.25 mV 180 mV 18 mV 1.8 mV ANSWER DOWNLOAD EXAMIANS APP
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