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48 True/False questions

  1. Electric fieldarea around a charge where the charge can be "felt" by another object

          

  2. Principle of SuperpositionE is a

          

  3. irregularly shaped objectsCharges accumulate at points for

          

  4. Semiconductorsnormally insulators, but adding specific atoms as impurities can turn them into conductors (silicon, germanium - used a lot in electronics)

          

  5. Electrical Insulatorsmaterials that allow charges to flow easily from them (most metals)

          

  6. N/COne noticed static charges more on _____ days because there is not moisture in the air to "connect" the charges

          

  7. positive and negativeElectric forces can be either

          

  8. conductor - electrostatic equilibriumNo net motion of the charges in a

          

  9. attractBoth insulators and conductors can be charged by

          

  10. zerois the small, positive test charge

          

  11. Charging by InductionA neutral conductor is brought near another charged object, then the conductor is grounded - no touching necessary

          

  12. attractive or repulsiveElectric forces can be either

          

  13. quantizedMillikan discovered that a charged object's charge is always a multiple of a fundamental charge, e - called...

          

  14. material's surfaceF = (kq1q2)/r2

          

  15. contactOpposite charges

          

  16. PolarizationThe closer two charges are, the____ the force of attraction or repulsion between them

          

  17. conductorsOnly ____ can become charged by induction

          

  18. stronger chargeThe _____ within an insulator can make its surface act like a charged object

          

  19. vector (direction)Only ____ can become charged by induction

          

  20. greaterLike charges

          

  21. Coulomb (C)SI unit for charge is the

          

  22. positive charge to negative chargeLines drawn from

          

  23. Coulomb's LawF = (kq1q2)/r2

          

  24. zerois the small, positive test charge

          

  25. test charge (+)is used to detect the presence of an electric field

          

  26. the outside of the materialCharges reside only on

          

  27. eis the charge of one electron (-1.60 x 10-19 Coulombs)

          

  28. transferredMillikan discovered that a charged object's charge is always a multiple of a fundamental charge, e - called...

          

  29. qvariable for charge

          

  30. outwardWhen the Field is positively charged, the direction is

          

  31. resultant forceforce between two objects that are not in contact with each other

          

  32. inwardWhen the Field is negatively charged, the direction is

          

  33. Direction of fieldis the direction of the force on the positive test charge

          

  34. neutral1 proton balances 1 electron and the net charge is zero

          

  35. qovariable for charge

          

  36. Superconductorsnormally insulators, but adding specific atoms as impurities can turn them into conductors (silicon, germanium - used a lot in electronics)

          

  37. Field Forceforce between two objects that are not in contact with each other

          

  38. (k = 8.9875 x 109 Nm2/C2)SI unit for charge is the

          

  39. Electrical Conductorsmaterials that do not allow charge to flow through them (glass, plastic, rubber, silk)

          

  40. Groundedconductor connected to the Earth by a conducting wire or copper pipe

          

  41. gravitational forceElectric force is much stronger than

          

  42. Electric Dipolearea around a charge where the charge can be "felt" by another object

          

  43. shifting of chargeLines closer together =

          

  44. repelLike charges

          

  45. electronsmove between material rather than protons

          

  46. Charging by ContactA neutral conductor is brought near another charged object, then the conductor is grounded - no touching necessary

          

  47. Ionsis the small, positive test charge

          

  48. dryOne noticed static charges more on _____ days because there is not moisture in the air to "connect" the charges