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 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? 48 s 0.48 s 0.48 ms 0.48 μs 48 s 0.48 s 0.48 ms 0.48 μs 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 248 μH 64 μH 32 μH 8 H 248 μH 64 μH 32 μH ANSWER DOWNLOAD EXAMIANS APP
Inductors The voltage across a coil when di/dt = 20 mA/s and L = 8 H is 1.6 mV 160 mV 2.5 mV 16 mV 1.6 mV 160 mV 2.5 mV 16 mV ANSWER DOWNLOAD EXAMIANS APP
Inductors When the current through an inductor decreases, the amount of energy stored in the electromagnetic field increases doubles decreases remains the same increases doubles decreases remains the same ANSWER DOWNLOAD EXAMIANS APP
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 91 mA 400 mA 57 mA 78 mA 91 mA 400 mA ANSWER DOWNLOAD EXAMIANS APP
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