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  • Question
  • Molecule is


  • Options
  • A. The smallest particle of a substance that retains the properties of that substance
  • B. A atom that has a shortage of electrons in its outer orbit
  • C. A atom that has an excessive number of electrons in its outer orbit
  • D. A atom that flows whenever there is an imbalance of electrical charges between two points
  • E. None of the above

  • Correct Answer
  • The smallest particle of a substance that retains the properties of that substance 


  • Electronic Principles problems


    Search Results


    • 1. The total inductance of a series inductor circuit is:

    • Options
    • A. equal to the sum of the individual inductance values
    • B. equal to the sum of the individual inductive-reactance values
    • C. less than the value of the smallest inductor
    • D. equal to the source voltage divided by total current
    • E. None of the above
    • Discuss
    • 2. Which one of the following statements best describes magnetic hysteresis?

    • Options
    • A. Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet
    • B. Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet
    • C. Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently
    • D. Hysteresis is most apparent when the core material is saturated
    • E. None of the above
    • Discuss
    • 3. Which one of the following statements best applies to a parallel RLC circuit?

    • Options
    • A. The voltage waveform for each component always has the same amplitude and phase as the applied voltage
    • B. The sum of the current is always less than the applied current
    • C. The current waveform for each component always has the same amplitude and phase as the applied current
    • D. All of the above
    • E. None of the above
    • Discuss
    • 4. What form of energy is used for creating static electricity?

    • Options
    • A. Solar energy
    • B. Mechanical energy
    • C. Chemical energy
    • D. Light energy
    • E. None of the above
    • Discuss
    • 5. The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?

    • Options
    • A. 250 ?A
    • B. 350 ?A
    • C. 0.25 ?A
    • D. 300 ?A
    • E. None of the above
    • Discuss
    • 6. Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs?

    • Options
    • A. P = I2R
    • B. P = IE
    • C. P = E2/R
    • D. I = P/E
    • E. None of the above
    • Discuss
    • 7. Which one of the following phrases most accurately describes a purely inductive circuit?

    • Options
    • A. Resistances provide the only opposition to current flow
    • B. Inductive reactance provides the only opposition to current flow
    • C. Combinations of resistance and inductive reactance provide any opposition to current flow
    • D. The ac voltage lags the current by 90 degree
    • E. None of the above
    • Discuss
    • 8. The total impedance of a parallel RLC circuit:

    • Options
    • A. always increases as the applied frequency increases
    • B. is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
    • C. always decreases as the applied frequency increases
    • D. is maximum at the resonant frequency
    • E. None of the above
    • Discuss
    • 9. A battery is a device composed of one or more:

    • Options
    • A. chemical cells
    • B. voltage generators
    • C. solar cells
    • D. piezoeletric cells
    • E. None of the above
    • Discuss
    • 10. Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

    • Options
    • A. Ammeter
    • B. Voltmeter
    • C. Ohmmeter
    • D. Wattmeter
    • E. None of the above
    • Discuss


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