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Home ‣ Electronics ‣ Basic Op-Amp Circuits See What Others Are Saying!
  • Question

  • If the value of resistor Rf in an averaging amplifier circuit is equal to the value of one input resistor divided by the number of inputs, the output will be equal to


  • Options
  • A. the average of the individual inputs
  • B. the inverted sum of the individual inputs
  • C. the sum of the individual inputs
  • D. the inverted average of the individual inputs

  • Correct Answer
  • the inverted average of the individual inputs 

    • More questions

    • 1. JFET terminal "legs" are connections to the drain, the gate, and the:

    • Options
    • A. channel
    • B. source
    • C. substrate
    • D. cathode
      • Discuss
    • 2. Capacitive reactance is inversely proportional with frequency.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. What is the average value of a 12 V peak wave?

    • Options
    • A. 3.82 V
    • B. 4.24 V
    • C. 7.64 V
    • D. 9.42 V
      • Discuss
    • 4. The DIAC is a:

    • Options
    • A. transistor
    • B. unidirectional device
    • C. three-layer device
    • D. bidirectional device
      • Discuss
    • 5. Phase angle is the difference in phase between the applied voltage (VS) and the circuit current (IT).

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Which is considered to be the common reference for a parallel circuit?

    • Options
    • A. Voltage
    • B. Current
    • C. Power
    • D. Resistance
      • Discuss
    • 7. 0.00015 V can be expressed in powers of ten as 1.5 × 10?4 V.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A 10 µF capacitor will have more capacitive reactance than a 20 µF capacitor in a 60 Hz circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. A JFET can be either a current-controlled device or a voltage-controlled device.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The effectiveness of a filter in rejecting signals beyond cutoff frequency is a function of the filter roll-off rating.

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

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