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Inductors
Three 15 mH inductors are in series. The total inductance is
5 mH
30 mH
45 mH
15 mH
5 mH
30 mH
45 mH
15 mH
Answer
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Related Question
Inductors
The following coils are in parallel: 75 H, 40 H, 25 H, and 15 H. The total inductance is approximately
2.2 μH
14 μH
6.9 μH
155 μH
2.2 μH
14 μH
6.9 μH
155 μH
Answer
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Inductors
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
is decreased
does not change
is increased
momentarily goes to zero
is decreased
does not change
is increased
momentarily goes to zero
Answer
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Inductors
A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is
5.5 mH
55 mH
less than 5.5 mH
less than 0.2 mH
5.5 mH
55 mH
less than 5.5 mH
less than 0.2 mH
Answer
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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
6 V
12 V
0 V
4 V
6 V
12 V
0 V
4 V
Answer
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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
87 A
87 mA
870 mA
337 mA
87 A
87 mA
870 mA
337 mA
Answer
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