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Flashcards

Electric Fields

Charlotte Buckley A Level Physics A level Inglês 20 flashcards

Electric Fields

Flashcards do conjunto (20)

  1. 1Which particle is responsible for charging in most situations?Electron
  2. 2How can a metal object become charged?By losing its free electrons
  3. 3What is an electric field line?A line drawn to show the direction of the force that would act on a positive charge
  4. 4Draw the shape of the electric field between parallel, oppositely charged plates.Draw the shape of the electric field between parallel, oppositely charged plates.
  5. 5Draw the shape of the electric field around a small, positive charge.Draw the shape of the electric field around a small, positive charge.
  6. 6What is the definition of electric field strength?Force per unit positive charge
  7. 7Is electric field strength a scalar or a vector quantity?Vector
  8. 8What is the equation for the electric field strength between parallel plates?What is the equation for the electric field strength between parallel plates?
  9. 9What are the 2 possible units for electric field strength?What are the 2 possible units for electric field strength?
  10. 10What is the equation for electric field strength of a radial field (e.g. the field around a point charge)?What is the equation for electric field strength of a radial field (e.g. the field around a point charge)?
  11. 11What is the definition of electric potential?Energy per unit positive charge to bring that charge from infinity to a point in the field
  12. 12Is electric potential a scalar or a vector quantity?Scalar
  13. 13What is an equipotential?Lines/surfaces showing points of equal potential in a field
  14. 14Draw the field around a small negative point charge and clearly mark 3 equipotentials.Draw the field around a small negative point charge and clearly mark 3 equipotentials.
  15. 15What is potential gradient?The rate of change of spacing between equipotentials
  16. 16What is the link between electric field strength and potential gradient???
  17. 17What is Coulomb's law?What is Coulomb's law?
  18. 18What is one similarity between Coulomb's Law and Newton's Law of universal gravitation?Give the force between two things (masses or charges) using an inverse square law
  19. 19What is one difference between gravitational and electric forces?Gravitational forces are always attractive
    Electric forces could be attractive or repulsive
  20. 20What is one similarity between uniform g and E fields?Equipotentials form a spherical surface

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A level A Level Physics FlashCards sobre Electric Fields, criado por Charlotte Buckley em 13-11-2017.
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