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 ms 0.48 s 0.48 μs 48 s TRUE ANSWER : ? YOUR ANSWER : ?
A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is less than 0.6 mH 9.9 mH 9.9 mH or greater than 5 mH greater than 5 mH TRUE ANSWER : ? YOUR ANSWER : ?
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 TRUE ANSWER : ? YOUR ANSWER : ?
The voltage across a coil when di/dt = 20 mA/s and L = 8 H is 160 mV 1.6 mV 16 mV 2.5 mV TRUE ANSWER : ? YOUR ANSWER : ?
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? 219 kΩ 66 kΩ 1.3 MΩ 660 kΩ TRUE ANSWER : ? YOUR ANSWER : ?
A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is 55 mH less than 5.5 mH 5.5 mH less than 0.2 mH TRUE ANSWER : ? YOUR ANSWER : ?
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 VL = VR VR ≥ VL TRUE ANSWER : ? YOUR ANSWER : ?
A 240 H inductor is equivalent to a 0.000240 mH inductor 0.240 mH inductor 240 H inductor 240 mH inductor TRUE ANSWER : ? YOUR ANSWER : ?
An inductance of 0.43 mH is smaller than 0.05 H 0.00043 H 430 μH 43 μH TRUE ANSWER : ? YOUR ANSWER : ?
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current is increased does not change momentarily goes to zero is decreased TRUE ANSWER : ? YOUR ANSWER : ?