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Parallel Circuits

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

doubles
increases
decreases
remains the same

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Parallel Circuits
A set of Christmas tree lights is connected in parallel across a 110 V source. The filament of each light bulb is 1.8 k. The current through each bulb is approximately

110 mA
61 mA
610 mA
18 mA

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

500
20
100
25

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Parallel Circuits
Three 47 resistors are connected in parallel across a 110 volt source. The current drawn from the source is approximately

7.06 A
2.3 A
780 mA
47 mA

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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

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

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

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

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