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 An inductor, a 1 k resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is 0 V 12 V 6 V 4 V 0 V 12 V 6 V 4 V ANSWER DOWNLOAD EXAMIANS APP
Inductors Two 10 H inductors are in parallel and the parallel combination is in series with a third 10 H inductor. What is the approximate total reactance when a voltage with a frequency of 7 kHz is applied across the circuit terminals? 1.3 MΩ 660 kΩ 219 kΩ 66 kΩ 1.3 MΩ 660 kΩ 219 kΩ 66 kΩ 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 8 H 32 μH 64 μH 248 μH 8 H 32 μH 64 μH 248 μH ANSWER DOWNLOAD EXAMIANS APP
Inductors The winding resistance of a coil can be increased by increasing the number of turns or using thinner wire using a thinner wire increasing the number of turns changing the core material increasing the number of turns or using thinner wire using a thinner wire increasing the number of turns changing the core material ANSWER DOWNLOAD EXAMIANS APP
Inductors The voltage across a coil when di/dt = 20 mA/s and L = 8 H is 16 mV 1.6 mV 2.5 mV 160 mV 16 mV 1.6 mV 2.5 mV 160 mV ANSWER DOWNLOAD EXAMIANS APP
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