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 57 mA 78 mA 91 mA 400 mA 57 mA 78 mA 91 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 VL > VR VL < VR VR ≥ VL VL = VR VL > VR VL < VR VR ≥ VL VL = VR 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 18 mV 180 mV 1.25 mV 1.8 mV 18 mV 180 mV 1.25 mV 1.8 mV 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 0.48 s 48 s 0.48 ms 0.48 μs 0.48 s 48 s ANSWER DOWNLOAD EXAMIANS APP
Inductors An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is 1 mA 100 mA 10 mA 1 A 1 mA 100 mA 10 mA 1 A ANSWER DOWNLOAD EXAMIANS APP
Inductors When the current through an inductor decreases, the amount of energy stored in the electromagnetic field remains the same decreases increases doubles remains the same decreases increases doubles ANSWER DOWNLOAD EXAMIANS APP
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