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Inductors

Inductors
An inductance of 0.08 μH is larger than

0.0000008 H
0.000008 H
0.00008 mH
0.000000008 H

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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

less than 0.2 mH
less than 5.5 mH
55 mH
5.5 mH

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Inductors
The inductance of an iron-core coil decreases if

the iron core is removed
None of these
the number of turns is decreased
the length of the coil decreases

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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

4 V
6 V
0 V
12 V

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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?

0.48 μs
0.48 ms
0.48 s
48 s

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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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