electrical-engineering-parallel-circuits Related Question Answers

1. If 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





2. Three lights are connected in parallel across a 120 volt source. If one light burns out,





3. Four equal-value 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





4. 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





5. The power dissipation in each of four parallel branches is 1.2 W. The total power dissipation is





6. A 470 resistor, a 220 resistor, and a 100 resistor are all in parallel. The total resistance is approximately





7. Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately





8. Four resistors of equal value are connected in parallel. If the total voltage is 15 V and the total resistance is 600 , the current through each parallel resistor is





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





10. 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





11. 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





12. A sudden increase in the total current into a parallel circuit may indicate





13. The following currents are measured in the same direction in a three-branch parallel circuit: 200 mA, 340 mA, and 700 mA. The value of the current into the junction of these branches is





14. The following resistors are in parallel across a voltage source: 220 , 470 , and 560 . The resistor with the least current is





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





16. There 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





17. Four 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





18. If one of the resistors in a parallel circuit is removed, the total resistance





19. Six resistors are in parallel. The two lowest-value resistors are both 1.2 k. The total resistance





20. In a five-branch 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





21. The sum of the currents into a junction is equal to the sum of the currents out of that junction.



22. When an open circuit occurs in a parallel branch, the total resistance decreases.



23. Parallel resistors are connected between the same two points.



24. In a parallel circuit, the branch with the lowest resistance has the most current.



25. The number of current paths equals the number of resistors in parallel.



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