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  • Question

  • 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


  • Options
  • A. 12.5 Ω
  • B. 200 Ω
  • C. 20 KΩ
  • D. 50 Ω

  • Correct Answer
  • 20 KΩ 

    Explanation
    10/(R/4) = 2 mA

    40/R = 2 mA

    R = 40/2 mA

    = 40/0.002 A

    = 20000 kohm (20 kohm)

    More questions

    • 1. Generally, the mesh current method results in fewer equations than the node voltage method.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. 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

    • Options
    • A. 50 mA
    • B. 70 mA
    • C. 120 mA
    • D. 40 mA
      • Discuss
    • 3. If you know the current anywhere in a series circuit, you know the current everywhere in a series circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A wiper is the sliding contact in a

    • Options
    • A. switch
    • B. photoconductive cell
    • C. thermistor
    • D. potentiometer
      • Discuss
    • 5. 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
    • 6. A lower Q produces a narrower bandwidth.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Voltage leads current by 90° in a capacitor.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. Voltage is measured in

    • Options
    • A. volts
    • B. farads
    • C. watts
    • D. ohms
      • Discuss
    • 9. A 0.01 µF capacitor equals how many picofarads?

    • Options
    • A. 100 pF
    • B. 1,000 pF
    • C. 10,000 pF
    • D. 100,000 pF
      • Discuss
    • 10. When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. becomes erratic
      • Discuss

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