1 .		An inductance of 0.08 H is larger than [Hint]   0.0000008 H   0.000000008 H   0.000008 H   0.00008 mH
2 .		An inductance of 0.43 mH is smaller than [Hint]   43 H   430 H   0.05 mH   0.00043 H
3 .		When the current through an inductor decreases, the amount of energy stored in the electromagnetic field [Hint]   increases   decreases   remains the same   doubles
4 .		When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field [Hint]   is halved   quadruples   doubles   does not change
5 .		The winding resistance of a coil can be increased by [Hint]   increasing the number of turns   using a thinner wire   changing the core material   increasing the number of turns or using thinner wire
6 .		The inductance of an iron-core coil decreases if [Hint]   the number of turns is decreased   the iron core is removed   the length of the coil decreases   none of the choices
7 .		Three 15 mH inductors are in series. The total inductance is [Hint]   15 mH   30 mH   45 mH   5 mH
8 .		A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is [Hint]   55 mH   less than 0.2 mH   less than 5.5 mH   5.5 mH
9 .		A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is [Hint]   9.9 mH   greater than 5 mH   9.9 mH or greater than 5 mH   less than 0.6 mH
10 .		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 [Hint]   0 V   6 V   12 V   4 V
11 .		A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current is [Hint]   increased   decreased   does not change   momentarily goes to zero
12 .		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 [Hint]   VR > VL   VL < VR   VL = VR   VL> VR
13 .		An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is [Hint]   good   open   shorted   partly shorted
14 .		A 240 H inductor is equivalent to a [Hint]   0.240 mH inductor   0.000240 mH inductor   240 mH inductor   240 H inductor
15 .		The voltage across a coil when di/dt = 20 mA/s and L = 8 H is [Hint]   16 mV   160 mV   1.6 mV   2.5 mV
16 .		The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is [Hint]   1.8 mV   18 mV   180 mV   1.25 mV
17 .		An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is [Hint]   1 mA   10 mA   100 mA   1 A
18 .		Five inductors are connected in series. The lowest value is 8 H. 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 [Hint]   8 H   32 H   64 H   128 H
19 .		The following coils are in parallel: 75 H, 40 H, 25 H, and 15 H. The total inductance is approximately [Hint]   6.9 H   14 H   2.2 H   155 H
20 .		A 150 H coil is in series with a 47 k resistor across a 12 V source. The circuit time constant is approximately [Hint]   7,110 s   7 s   7 ms   7 s
21 .		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? [Hint]   5.28 s   5.28 ms   5.28 s   528 s
22 .		A switch, a 220 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? [Hint]   91 mA   78 mA   57 mA   400 mA
23 .		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? [Hint]   219 k   66 k   660 k   1.3 M
24 .		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 [Hint]   87 mA   870 mA   87 A   337 mA
25 .		A certain coil that is supposed to have a 12 winding resistance is measured with an ohmmeter. The meter indicates 5 . The problem is [Hint]   the coil is open   the coil is completely shorted   some windings are shorted   there is no problem