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PARALLEL CIRCUITS
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Question 1 of 25
1. Question
1 pointsAn ammeter has an internal resistance of 50 Ω. The meter movement itself can handle up to 1 mA. If 10 mA is applied to the meter, the shunt resistor, RSH1, is approximately
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Question 2 of 25
2. Question
1 pointsThe total resistance of a parallel circuit is 50 Ω. If the total current is 120 mA, the current through the 270 Ω that makes up part of the parallel circuit is approximately
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Question 3 of 25
3. Question
1 pointsThe currents into a junction flow along two paths. One current is 4A and the other is 3 A. The total current out of the junction is
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Question 4 of 25
4. Question
1 pointsWhen an additional resistor is connected across an existing parallel circuit, the total resistance
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Question 5 of 25
5. Question
1 pointsWhen a 1.6 kΩ resistor and a 120Ω resistor are connected in parallel, the total resistance is
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Question 6 of 25
6. Question
1 pointsIf there are a total of 120 mA into a parallel circuit consisting of three branches, and two of the branch currents are 40 mA and 10 mA, the third branch current is
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Question 7 of 25
7. Question
1 pointsThree lights are connected in parallel across a 120 volt source. If one light burns out,
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Question 8 of 25
8. Question
1 pointsFour equalvalue resistors are connected in parallel. Ten volts are applied across the parallel circuit and 2 mA are measured from the source. The value of each resistor is
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Question 9 of 25
9. Question
1 pointsA 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
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Question 10 of 25
10. Question
1 pointsThe power dissipation in each of four parallel branches is 1.2 W.The total power dissipation is
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Question 11 of 25
11. Question
1 pointsA 470 Ω resistor, a 220 Ω resistor, and a 100 Ω resistor are all in parallel. The total resistance is approximately
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Question 12 of 25
12. Question
1 pointsFive light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately
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Question 13 of 25
13. Question
1 pointsFour resistors of equal value are connected in parallel. If the total voltage is 15 V and the total resistance is 600 Ω, the current through each parallel resistor is
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Question 14 of 25
14. Question
1 pointsFive 100 Ω resistors are connected in parallel. If one resistor is removed, the total resistance is
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Question 15 of 25
15. Question
1 pointsFour 8 Ω 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
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Question 16 of 25
16. Question
1 pointsIn a certain threebranch 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
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Question 17 of 25
17. Question
1 pointsA sudden increase in the total current into a parallel circuit may indicate
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Question 18 of 25
18. Question
1 pointsThe following currents are measured in the same direction in a threebranch parallel circuit: 200 mA, 340 mA, and 700 mA. The value of the current into the junction of these branches is
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Question 19 of 25
19. Question
1 pointsThe following resistors are in parallel across a voltage source 220Ω , 470Ω , and 560Ω . The resistor with the least current is
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Question 20 of 25
20. Question
1 pointsThree 47 Ω resistors are connected in parallel across a 110 volt source. The current drawn from the source is approximately
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Question 21 of 25
21. Question
1 pointsThere is a total of 800 mA of current into four parallel resistors.The currents through three of the resistors are 40 mA, 70 mA, and 200 mA. The current through the fourth resistor is
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Question 22 of 25
22. Question
1 pointsFour resistors are connected in parallel. Fifteen mA flows through resistor R. If the second resistor is 2R, the third resistor 3R, and the fourth resistor 4R, the total current in the circuit is
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Question 23 of 25
23. Question
1 pointsIf one of the resistors in a parallel circuit is removed, the total resistance
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Question 24 of 25
24. Question
1 pointsSix resistors are in parallel. The two lowestvalue resistors are both 1.2 kΩ. The total resistance
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Question 25 of 25
25. Question
1 pointsIn a fivebranch parallel circuit, there are 12 mA of current in each branch. If one of the branches opens, the current in each of the other four branches is
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