Electronics Engineering Toughest Quiz!

20 Questions | Total Attempts: 31046

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Electronics Engineering Quizzes & Trivia

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Questions and Answers
  • 1. 
    Of the following substances, the best conductor is
    • A. 

      Air

    • B. 

      Copper

    • C. 

      Iron

    • D. 

      Salt water

  • 2. 
    The atomic number of an element is determined by?
    • A. 

      the number of neutrons

    • B. 

      the number of protons

    • C. 

      the number of neutrons plus the number of protons

    • D. 

      the number of electrons

  • 3. 
    The atomic weight of an element is approximately determined by?
    • A. 

      the number of neutrons

    • B. 

      the number of protons

    • C. 

      the number of neutrons plus the number of protons

    • D. 

      the number of electrons

  • 4. 
    Suppose there is an atom of oxygen, containing eight protons and eight neutrons in the nucleus, and two neutrons are added to the nucleus. What is the resulting atomic weight?
    • A. 

      18

    • B. 

      8

    • C. 

      10

    • D. 

      16

  • 5. 
    An ion
    • A. 

      Is electrically neutral

    • B. 

      Has positive electric charge

    • C. 

      Has negative electric charge

    • D. 

      Can have either a positive or negative charge

  • 6. 
    An isotope
    • A. 

      Is electrically neutral

    • B. 

      Has positive electric charge

    • C. 

      Has negative electric charge

    • D. 

      Can have either a positive or negative charge

  • 7. 
    A molecule
    • A. 

      Can consist of a single atom of an element

    • B. 

      Always contains two or more elements

    • C. 

      Always has two or more atoms

    • D. 

      Is always electrically charged

  • 8. 
    In a compound,
    • A. 

      There can be a single atom of an element

    • B. 

      There must always be two or more elements

    • C. 

      The atoms are mixed in with each other but not joined

    • D. 

      There is always a shortage of electrons

  • 9. 
    An electrical insulator can be made a conductor
    • A. 

      By heating it

    • B. 

      By cooling it

    • C. 

      By ionizing it

    • D. 

      By oxidizing it

  • 10. 
    Of the following substances, the worst conductor is
    • A. 

      Air

    • B. 

      Copper

    • C. 

      Iron

    • D. 

      Salt water

  • 11. 
    Movement of holes in a semiconductor
    • A. 

      Is like a flow of electrons in the same direction

    • B. 

      Is possible only if the current is high enough

    • C. 

      Results in a certain amount of electric current

    • D. 

      Causes the material to stop conducting

  • 12. 
    If a material has low resistance, then
    • A. 

      It is a good conductor

    • B. 

      It is a poor conductor

    • C. 

      The current flows mainly in the form of holes

    • D. 

      Current can flow only in one direction

  • 13. 
    A coulomb
    • A. 

      Represents a current of 1 ampere

    • B. 

      Flows through a 100-watt light bulb

    • C. 

      Is equivalent to 1 ampere per second

    • D. 

      Is an extremely large number of charge carriers

  • 14. 
    A stroke of lightning
    • A. 

      Is caused by a movement of holes in an insulator

    • B. 

      Has a very low current

    • C. 

      Is a discharge of static electricity

    • D. 

      Builds up between clouds

  • 15. 
    The volt is the standard unit of
    • A. 

      Current

    • B. 

      Charge

    • C. 

      Electromotive force

    • D. 

      Resistance

  • 16. 
    If an EMF of 1 volt is placed across a resistance of 2 ohms, then the current is
    • A. 

      Half an ampere

    • B. 

      1 ampere

    • C. 

      2 amperes

    • D. 

      Impossible to determine

  • 17. 
    A backward-working electric motor, in which mechanical rotation is converted to electricity,
    • A. 

      An inefficient, energy-wasting device

    • B. 

      A motor with the voltage connected the wrong way

    • C. 

      An electric generator

    • D. 

      A magnetic field

  • 18. 
    In a battery, chemical energy can sometimes be replenished by
    • A. 

      Connecting it to a light bulb

    • B. 

      Charging it

    • C. 

      Discharging it

    • D. 

      No means known; when a battery is dead, you must throw it away

  • 19. 
     A fluctuating magnetic field
    • A. 

      Produces an electric current in an insulator

    • B. 

      Magnetizes the earth

    • C. 

      Produces a fluctuating electric field

    • D. 

      Results from a steady electric current

  • 20. 
    Visible light is converted into electricity
    • A. 

      in a dry cell

    • B. 

      In a wet cell

    • C. 

      In an incandescent bulb

    • D. 

      In a photovoltaic cell