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  • Question

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


  • Options
  • A. 220 Ω
  • B. 470 Ω
  • C. 560 Ω
  • D. impossible to determine without knowing the voltage

  • Correct Answer
  • 560 Ω 

    • Parallel Circuits problems

    Search Results

    • 1. An 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

    • Options
    • A. 55 Ω
    • B. 5.5 Ω
    • C. 50 Ω
    • D. 9 Ω
      • Discuss
    • 2. Three 47 Ω resistors are connected in parallel across a 110 volt source. The current drawn from the source is approximately

    • Options
    • A. 2.3 A
    • B. 780 mA
    • C. 47 mA
    • D. 7.06 A
      • Discuss
    • 3. When an additional resistor is connected across an existing parallel circuit, the total resistance

    • Options
    • A. remains the same
    • B. decreases by the value of the added resistor
    • C. increases by the value of the added resistor
    • D. decreases
      • Discuss
    • 4. 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

    • Options
    • A. 48 mA
    • B. 12 mA
    • C. 0 A
    • D. 3 mA
      • Discuss
    • 5. Three lights are connected in parallel across a 120 volt source. If one light burns out,

    • Options
    • A. the remaining two will glow dimmer
    • B. the remaining two will glow brighter
    • C. the remaining two will not light
    • D. the remaining two will glow with the same brightness as before
      • Discuss
    • 6. The total resistance of a parallel circuit is 50 Ω. If the total current is 120 mA, the current through the 270 Ω resistor that makes up part of the parallel circuit is approximately

    • Options
    • A. 22 mA
    • B. 120 mA
    • C. 220 mA
    • D. 50 mA
      • Discuss
    • 7. A set of Christmas tree lights is connected in parallel across a 110 V source. The filament of each light bulb is 1.8 kΩ. The current through each bulb is approximately

    • Options
    • A. 610 mA
    • B. 18 mA
    • C. 110 mA
    • D. 61 mA
      • Discuss
    • 8. Four 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

    • Options
    • A. 18 W
    • B. 1.5 W
    • C. 48 W
    • D. 72 W
      • Discuss
    • 9. Four 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

    • Options
    • A. 25 mA
    • B. 100 mA
    • C. 6.25 mA
    • D. 200 mA
      • Discuss
    • 10. A sudden increase in the total current into a parallel circuit may indicate

    • Options
    • A. a drop in source voltage
    • B. an open resistor
    • C. an increase in source voltage
    • D. either a drop in source voltage or an open resistor
      • Discuss

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