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Inductors

Inductors
Three 15 mH inductors are in series. The total inductance is

30 mH
5 mH
15 mH
45 mH

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Inductors
A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is

9.9 mH
9.9 mH or greater than 5 mH
less than 0.6 mH
greater than 5 mH

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Inductors
An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is

1 mA
10 mA
1 A
100 mA

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Inductors
When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field

quadruples
does not change
is quartered
doubles

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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

12 V
6 V
0 V
4 V

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Inductors
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current

does not change
is increased
momentarily goes to zero
is decreased

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