Physics Quiz 3

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iishvo
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228104
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Physics Quiz 3
Updated:
2013-07-24 23:40:32
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Physics Giancoli
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  1. Which of the following is not a vector: electric line force, electric force, electric field, electric potential?
    electric potential
  2. One joule per coulomb is a
    volt
  3. Two identical aluminum objects are insulated form their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher potential?
    B
  4. For a proton moving in the direction of the electric field
    its potential energy decreases and its electric potential decreases.
  5. For an electron moving in a direction opposite to the electric field
    its potential energy decreases and its electric potential increases.
  6. Several electrons are placed on a hollow conducting sphere. They
    become uniformly distributed on the sphere's outer surface.
  7. A small charged ball is accelerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new speed of the ball be?
    2v
  8. A surface on which all points are at the same potential is referred to as
    an equipotential surface.
  9. A negative charge is moved from point A to point B along an equipotential surface.
    No work is required to move the negative charge from point A to point B.
  10. An equipotential surface must be
    perpendicular to the electric field at any point.
  11. The energy acquired by a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred to as
    an electron-volt.
  12. The electron-volt is a unit of
    energy
  13. One electron-volt corresponds to
    1.6x10^-19 J
  14. The absolute potential at a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the same point charge?
    50 V
  15. The absolute potential at a distance of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same point charge?
    -50 V
  16. The absolute potential at the exact center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when each of the other corners is also filled with a charge of +Q?
    12 V
  17. The absolute potential at the center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when a second charge of -Q is placed at one of the remaining corner?
    zero
  18. Electric dipoles always consist of two charges that are
    equal in magnitude; opposite in sign
  19. One coulomb per volt is
    farad

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