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Home Electrical Engineering Series-Parallel Circuits See What Others Are Saying!
  • Question
  • Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is


  • Options
  • A. 900 µA
  • B. 9 mA
  • C. 90 mA
  • D. 800 µA

  • Correct Answer
  • 900 µA 


  • More questions

    • 1. A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is

    • Options
    • A. 212 Ω
    • B. 2.12 mS + j3.14 mS
    • C. 3.14 mS + j2.12 mS
    • D. 318.3 Ω
    • Discuss
    • 2. Find the current through R1 in the given circuit.


    • Options
    • A. 0.16 A
    • B. 0.24 A
    • C. 0.2 A
    • D. 0.04 A
    • Discuss
    • 3. In a certain three-wire Y-connected generator, the phase voltages are 2 kV. The magnitudes of the line voltages are

    • Options
    • A. 2,000 V
    • B. 6,000 V
    • C. 666 V
    • D. 3,464 V
    • Discuss
    • 4. A two-phase generator is connected to two 90 Ω load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?

    • Options
    • A. 1.33 A
    • B. 1.88 A
    • C. 2.66 A
    • D. 1.77 A
    • Discuss
    • 5. How much resistance is required to limit the current from a 12 V battery to 3.6 mA?

    • Options
    • A. 3.3 kΩ
    • B. 33 kΩ
    • C. 2.2 kΩ
    • D. 22 kΩ
    • Discuss
    • 6. A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse. To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.

    • Options
    • A. 40 Ω
    • B. 4 Ω
    • C. 2 Ω
    • D. 20 Ω
    • Discuss
    • 7. In a △-connected generator, there is a 120° difference between each line current and the nearest phase current.

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. An RC high-pass filter consists of an 820 Ω resistor. What is the value of C so that Xc is ten times less than R at an input frequency of 12 kHz?

    • Options
    • A. 81 µF
    • B. 161 µF
    • C. 0.161 µF
    • D. 220 µF
    • Discuss
    • 9. Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is

    • Options
    • A. 16.54 V
    • B. 1.65 V
    • C. 10.60 V
    • D. 5.93 V
    • Discuss
    • 10. To derive 18 V and 12 V from a 24 V supply requires a voltage divider with three taps.

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


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