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 78 mA 400 mA 91 mA 57 mA 78 mA 400 mA 91 mA 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
Inductors Two inductors, L1 and L2, are in parallel. L1 has a value of 25 H and L2 a value of 50 H. The parallel combination is in series with L3, a 20 H coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is 87 A 337 mA 870 mA 87 mA 87 A 337 mA 870 mA 87 mA 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 μs 48 s 0.48 ms 0.48 s 0.48 μs 48 s 0.48 ms 0.48 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 10 mA 1 mA 1 A 100 mA 10 mA 1 mA 1 A 100 mA ANSWER DOWNLOAD EXAMIANS APP
Inductors An inductance of 0.08 μH is larger than 0.000008 H 0.000000008 H 0.0000008 H 0.00008 mH 0.000008 H 0.000000008 H 0.0000008 H 0.00008 mH ANSWER DOWNLOAD EXAMIANS APP
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