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  • Question

  • A 12 V source has an internal resistance of 90 Ω. If a load resistance of 20 Ω is connected to the voltage source, the load power, PL, is


  • Options
  • A. 2.38 mW
  • B. 2.38 W
  • C. 238 mW
  • D. 23.8 W

  • Correct Answer
  • 238 mW 

    • Circuit Theorems and Conversions problems

    Search Results

    • 1. Referring to the given circuit, the voltage and current for the load resistor, RL, is


    • Options
    • A. 450 mV, 4.5 mA
    • B. 4.50 V, 45 mA
    • C. 4.50 V, 4.5 mA
    • D. 450 mV, 45 mA
      • Discuss
    • 2. A 680 Ω load resistor, RL, is connected across a constant current source of 1.2 A. The internal source resistance, RS, is 12 kΩ. The load current, RL, is

    • Options
    • A. 0 A
    • B. 1.2 A
    • C. 114 mA
    • D. 1.14 A
      • Discuss
    • 3. 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
    • 4. A certain current source has the values IS = 4 µA and RS = 1.2 MΩ. The values for an equivalent voltage source are

    • Options
    • A. 4.8 µV, 1.2 MΩ
    • B. 1 V, 1.2 MΩ
    • C. 4.8 V, 4.8 MΩ
    • D. 4.8 V, 1.2 MΩ
      • Discuss
    • 5. A 120 Ω load is connected across an ideal voltage source with VS = 12 V. The voltage across the load

    • Options
    • A. is 0 V
    • B. is 12 V
    • C. is 120 V
    • D. cannot be determined
      • Discuss
    • 6. What is the Thevenin equivalent (VTH and RTH) for the circuit given?


    • Options
    • A. 6.4 V, 422 Ω
    • B. 6.4 V, 560 Ω
    • C. 6.4 V, 680 Ω
    • D. 30 V, 422 Ω
      • Discuss
    • 7. In a two-source circuit, one source acting alone produces 12 mA through a given branch. The other source acting alone produces 10 mA in the opposite direction through the same branch. The actual current through the branch is

    • Options
    • A. 22 mA
    • B. 12 mA
    • C. 10 mA
    • D. 2 mA
      • Discuss
    • 8. Referring to the given circuit, determine VTH and RTH if a 68 Ω resistor is connected in parallel across R2 and R3.


    • Options
    • A. 3.3 V, 148 Ω
    • B. 330 mV, 148 Ω
    • C. 3.3 V, 68 Ω
    • D. 330 mV, 68 Ω
      • Discuss
    • 9. The unit for permeability is

    • Options
    • A. Wb/At × m
    • B. At/m
    • C. At/Wb
    • D. Wb
      • Discuss
    • 10. The induced voltage across a stationary conductor in a stationary magnetic field is

    • Options
    • A. zero
    • B. reversed in polarity
    • C. increased
    • D. decreased
      • Discuss

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