Direct current is the one directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams.
A direct current circuit is an electrical circuit that consists of any combination of constant voltage sources, constant current sources, and resistors.
This is a Quiz about Direct Current Circuit Basics and Analysis!
Become four times as great.
Become twice as great.
Stay the same as it was before.
Become half as great.
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90 Ω
3.24 kΩ
540 Ω
None of the above
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On a sticker on the back of a television receiver.
In an advertisement for an electric oven.
In the service/repair manual for a two-way radio.
In the photograph of the front panel of a stereo hi-fi tuner.
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4.4 V.
5.0 V.
15 V.
Not determinable from the data given.
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23 Ω.
23 kΩ.
204 Ω.
0.2 MΩ.
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250 mW.
13 mW.
13 W.
Impossible to determine from the data given.
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0.18 V
33 mV
5.6 mV
0.67 V
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1.4 A
15 mA
150 mA
1.5 A
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Should be large to minimize current drain.
Should be as small as the power supply will allow.
Is not important.
Should be such that the current is kept to 100 mA.
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Current
Voltage
Wattage
Resistance
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From resistors that are all different.
From resistors that are all identical.
From a series combination of resistors in parallel but not from a parallel combination of resistors in series.
From a parallel combination of resistors in series, but not from a series combination of resistors in parallel.
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All the other bulbs will go out.
The current in the string will go up.
The current in the string will go down.
The current in the string will stay the same.
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Is a fraction of the power supply voltage.
Depends on the total resistance.
Is equal to the supply voltage.
Depends on the ratio of resistances.
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3 × 3 resistors.
4 × 3 resistors.
4 × 4 resistors.
2 × 5 resistors.
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Four sets of two resistors in series, and connecting these four sets in parallel.
Four sets of two resistors in parallel, and connecting these four sets in series.
A 3 × 3 series-parallel matrix of resistors.
A series-parallel matrix, but something different than those described above.
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Make a 2 × 2 series-parallel matrix.
Connect three of the resistors in parallel.
Make a 3 × 3 series-parallel matrix.
Do something other than any of the above.
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