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  • Question

  • Referring to the given circuit, determine VTH and RTH if a 68 Ω resistor is connected in parallel across R2 and R3.

    Referring to the given circuit, determine VTH and RTH if a 68 ? resistor is connected in parallel ac


  • Options
  • A. 3.3 V, 148 Ω
  • B. 330 mV, 148 Ω
  • C. 3.3 V, 68 Ω
  • D. 330 mV, 68 Ω

  • Correct Answer
  • 3.3 V, 148 Ω 

    • Circuit Theorems and Conversions problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
      • Discuss
    • 4. 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
    • 5. 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
    • 6. The unit for permeability is

    • Options
    • A. Wb/At × m
    • B. At/m
    • C. At/Wb
    • D. Wb
      • Discuss
    • 7. 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
    • 8. For a given wirewound core, an increase in current through the coil

    • Options
    • A. reverses the flux lines
    • B. decreases the flux density
    • C. increases the flux density
    • D. causes no change in flux density
      • Discuss
    • 9. If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. doubles
      • Discuss
    • 10. The direction of a magnetic field within a magnet is

    • Options
    • A. from south to north
    • B. from north to south
    • C. back to front
    • D. front to back
      • Discuss

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