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? 78 mA 91 mA 57 mA 400 mA 78 mA 91 mA 57 mA 400 mA 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 870 mA 87 mA 87 A 337 mA 870 mA 87 mA 87 A 337 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 s 48 s 0.48 ms 0.48 μs 0.48 s 48 s 0.48 ms 0.48 μs ANSWER DOWNLOAD EXAMIANS APP
Inductors The voltage across a coil when di/dt = 20 mA/s and L = 8 H is 16 mV 160 mV 2.5 mV 1.6 mV 16 mV 160 mV 2.5 mV 1.6 mV ANSWER DOWNLOAD EXAMIANS APP
Inductors An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is open good shorted partly shorted open good shorted partly shorted ANSWER DOWNLOAD EXAMIANS APP
Inductors Five inductors are connected in series. The lowest value is 8 μH. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, the total inductance is 32 μH 64 μH 8 H 248 μH 32 μH 64 μH 8 H 248 μH ANSWER DOWNLOAD EXAMIANS APP
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