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Parallel Circuits

Parallel Circuits
Five 100 resistors are connected in parallel. If one resistor is removed, the total resistance is

500
20
25
100

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Parallel Circuits
The currents into a junction flow along two paths. One current is 4 A and the other is 3 A. The total current out of the junction is

1 A
7 A
unknown
the larger of the two

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Parallel Circuits
A sudden increase in the total current into a parallel circuit may indicate

an increase in source voltage
either a drop in source voltage or an open resistor
an open resistor
a drop in source voltage

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Parallel Circuits
If one of the resistors in a parallel circuit is removed, the total resistance

increases
doubles
remains the same
decreases

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Parallel Circuits
In a certain three-branch parallel circuit, R1 has 12 mA through it, R2 has 15 mA through it, and R3 has 25 mA through it. After measuring a total of 27 mA, you can say that

R1 is open
the circuit is operating properly
R3 is open
R2 is open

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Parallel Circuits
Four 8 speakers are connected in parallel to the output of an audio amplifier. If the maximum voltage to the speakers is 12 V, the amplifier must be able to deliver to the speakers

48 W
1.5 W
18 W
72 W

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