Physics Chapter 22

58 Questions | Total Attempts: 168

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Physics Chapter 22

Physics Chapter 22


Questions and Answers
  • 1. 
    Which force binds atoms together to form molecules?
    • A. 

      Gravitational

    • B. 

      Nuclear

    • C. 

      Electrical

    • D. 

      Centripetal

    • E. 

      None of these

  • 2. 
    The fundamental force underlying all chemical reactions is
    • A. 

      Gravitational

    • B. 

      Nuclear

    • C. 

      Centripetal

    • D. 

      Electrical

    • E. 

      None of these

  • 3. 
    In an electrically neutral atom the number of protons in the nucleus is equal to the number of
    • A. 

      Electrons that surround the nucleus

    • B. 

      Neutrons in the nucleus

    • C. 

      Both of these

    • D. 

      Neither of these

  • 4. 
    A positive ion has more
    • A. 

      Electrons than neutrons

    • B. 

      Electrons than protons

    • C. 

      Protons than electrons

    • D. 

      Protons than neutrons

    • E. 

      Neutrons than protons

  • 5. 
    Strip electrons from an atom and the atom become a
    • A. 

      Positive ion

    • B. 

      Negative ion

    • C. 

      Different element

  • 6. 
    To say that electric charge is quantized is to say that the charge on an object
    • A. 

      May occur in an infinite variety of quantities

    • B. 

      Is a whole number multiple of the charge of one electron

    • C. 

      Will interact with neighboring electric charges

    • D. 

      Can be neither created nor destroyed

  • 7. 
    To say that electric charge is conserved is to say that electric charge
    • A. 

      May occur in an infinite variety of quantities

    • B. 

      Is a whole number multiple of the charge of one electron

    • C. 

      Will interact with neighboring electric charges

    • D. 

      Can be neither created nor destroyed

  • 8. 
    The unit of electric charge, the coulomb, is the charge on
    • A. 

      One electron

    • B. 

      A specific large number of electrons

  • 9. 
    A main difference between gravitational and electric forces is that electrical forces
    • A. 

      Attract

    • B. 

      Repel or attract

    • C. 

      Obey the inverse-square law

    • D. 

      Act over shorter distances

    • E. 

      Are weaker

  • 10. 
    The electrical force between charges is strongest when the charges are
    • A. 

      Close together

    • B. 

      Far apart

    • C. 

      The electric force is constant everywhere

  • 11. 
    The electrical force between charges depends on the
    • A. 

      Magnitude of electric charges

    • B. 

      Separation distance between electric charges

    • C. 

      Both of these

    • D. 

      None of these

  • 12. 
    A transistor is an example of
    • A. 

      A resistor

    • B. 

      A superconductor

    • C. 

      A semiconductor

    • D. 

      A dry cell

    • E. 

      Electrostatic shielding

  • 13. 
    Superconductors are noted for their
    • A. 

      High electric resistance

    • B. 

      Low electric resistance

    • C. 

      Absence of electric resistance

  • 14. 
    Rub electrons from your hair with a comb and the comb becomes
    • A. 

      Negatively charged

    • B. 

      Positively charge

  • 15. 
    An electron and a proton
    • A. 

      Attract each other

    • B. 

      Repel each other

  • 16. 
    Two protons attract each other gravitationally and repel each other electrically. By far the greater is
    • A. 

      The gravitational attraction

    • B. 

      The electrical repulsion

    • C. 

      Neither- they are the same

  • 17. 
    • A. 

      Attract lightning and guide it to the ground

    • B. 

      Discharge the structure to which it is attached.

    • C. 

      Cancel the electric field within the structure to which it is attached

    • D. 

      Induce within the structure to which it is attached a charge opposite to that of charged clouds overhead

  • 18. 
    To say that an object is electrically polarized is to say
    • A. 

      It is electrically charged

    • B. 

      Its charges have been rearranged

    • C. 

      Its internal electric field is zero

    • D. 

      It is only partially conducting

    • E. 

      It is to some degree magnetic

  • 19. 
    A balloon will stick to a wooden wall if the balloon is charged
    • A. 

      Negatively

    • B. 

      Positively

    • C. 

      Either way

    • D. 

      Neither way

  • 20. 
    When a car is struck by lightning, the resulting electric field inside the car is
    • A. 

      Normally huge, but for brief time

    • B. 

      Normally huge for a time longer than the lightning stroke itself

    • C. 

      Small enough to be safe for an occupant inside

    • D. 

      Zero

  • 21. 
    Electric potential, measured in volts, is the ratio of electric energy to amount of electric
    • A. 

      Current

    • B. 

      Resistance

    • C. 

      Charge

    • D. 

      Voltage

    • E. 

      None of these

  • 22. 
    The electric field inside the dome of a Van de Graaff generator
    • A. 

      Depends on the amount of charge on it

    • B. 

      Depends on its size

    • C. 

      Both of these

    • D. 

      Neither of these

  • 23. 
    An uncharged pitch ball is suspended by a nylon fiber. When a negatively charged rubber rod is brought nearby, without touching it, the pitch ball
    • A. 

      Becomes charged by induction

    • B. 

      Becomes polarized

    • C. 

      Is repelled by the rod

    • D. 

      All of these

    • E. 

      None of these

  • 24. 
    The net charge on a charged capacitor
    • A. 

      Depends on the area of the capacitor plates

    • B. 

      Depends on the distance between the capacitor plates

    • C. 

      Depends on the medium between the capacitor plates

    • D. 

      All of these

    • E. 

      None of these- the net charge is zero

  • 25. 
    Charges on the plates of a charged capacitor reside on the surfaces
    • A. 

      Between the capacitor plates

    • B. 

      Exterior to the capacitor