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 400 mA 91 mA 78 mA 57 mA 400 mA 91 mA 78 mA 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 248 μH 64 μH 8 H 32 μH 248 μH 64 μH 8 H 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 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 337 mA 87 A 870 mA 87 mA 337 mA 87 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 doubles increases decreases remains the same doubles increases decreases ANSWER DOWNLOAD EXAMIANS APP
Inductors The following coils are in parallel: 75 H, 40 H, 25 H, and 15 H. The total inductance is approximately 14 μH 2.2 μH 155 μH 6.9 μH 14 μH 2.2 μH 155 μH 6.9 μH ANSWER DOWNLOAD EXAMIANS APP
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