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P.1

P.1. P.1. Electric charges. Rubbing. P.1. Atom. +. -. Proton. Electron. Neutron. Matter. P.1. Hydrogen. +. -. Electrically neutral. P.1. -. -. -. -. +. +. +. +. +. +. -. +. +. -. -. -. P.1. No. of electrons = no. of protons. Electrically neutral.

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P.1

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  1. P.1

  2. P.1 Electric charges Rubbing

  3. P.1 Atom + - Proton Electron Neutron Matter

  4. P.1 Hydrogen + - Electrically neutral

  5. P.1 - - - - + + + + + + - + + - - -

  6. P.1 No. of electrons = no. of protons Electrically neutral Only electron can be added or removed

  7. P.1 - - - + + + + + + - + + - - Positive charge - -

  8. P.1 - - - - + + + + + + - + + - - - Negative charge -

  9. P.1

  10. P.1

  11. P.1 + + - - Like charges repel

  12. P.1 + - Unlike charges attract

  13. P.1 + - Charged object attracts uncharged object

  14. P.1 Test + + + + + - - - - -

  15. P.2 Kinetic energy of electrons Rubbing

  16. P.2 Positive charges are formed because of loss of electron - Negative charges are formed because of gain of electron Principle of conservation of charge

  17. P.2 Coulomb (C) Unit of charge Charge of an electron = - 1.6x10-19 C No. of electrons in 1 C = 6.25 x 1018 Smallest charge = - 1.6x10-19 C

  18. P.2 Free electrons Conduct electricity & heat energy Conductor Insulator

  19. P.3 Charge distribution Resultant force = 0 Charges repel each other Charges are rest on the surface

  20. P.3 Charge distribution Higher charges density at sharp edge

  21. P.3 Kinetic energy of electrons Positive charges are formed because of loss of electron - Negative charges are formed because of gain of electron Rubbing

  22. P.3 Resistor -

  23. P.3 5 kV

  24. P.3 EHT e-

  25. P.3 EHT e-

  26. P.5 Positive & negative charges are formed Charge sharing - - - - Sphere is neutral Electrons are repelled

  27. P.5 e- - - - - Electrons are repelled & flow to the sphere

  28. P.5 - - Negative charges are shared between the rod & the sphere

  29. P.5 - - Charge sharing produces same kind of charge Amount of charge decreases after sharing

  30. P.5 Positive & negative charges are formed + + + + Sphere is neutral Electrons are attracted

  31. P.5 e- + + + + Electrons are attracted & flow to the rod

  32. P.5 + + Positive charges are shared between the rod & the sphere

  33. P.5 + + Charge sharing produces same kind of charge Amount of charge decreases after sharing

  34. P.5 (e.g.) +9 x 10-10 C -4 x 10-10 C Charges are attracted each other

  35. P.5 (e.g.) Total charges = +5x10-10 C Positive Charges are repelled

  36. P.5 (e.g.) Charges in each ball = +2.5x10-10 C

  37. P.4 Positive & negative charges are formed Charge induction - - - - Sphere is neutral Electrons are repelled

  38. P.4 e- e- Earthing - - - - Positive charges are attracted by the negative charges of the rod Negative charges are shared between the sphere & the earth

  39. P.4 Bigger in size will have more charges Nearly all charges in ball will be gone Charges are shared by the ball & the Earth Earthing

  40. P.4 - - - - The surface area of the earth is much larger Nearly all the negative charges are lost

  41. P.4 Charge induction produces opposite sign of charge Amount of charge remains the same

  42. P.4 Positive & negative charges are formed + + + + Sphere is neutral Electrons are attracted

  43. P.4 e- e- Earthing + + + + Negative charges are attracted by the positive charges of the rod Positive chargesare shared between the sphere & the earth

  44. P.4 + + + + The surface area of the earth is much larger Nearly all the positive chargesare lost

  45. P.4 Charge induction produces opposite sign of charge Amount of charge remains the same

  46. P.4 Positive & negative charges are formed No charge - - - - Electrons are repelled

  47. P.4 - - - - The spheres must be separated under the presence of the charged rod

  48. P.4 Both kinds of charges are produced

  49. P.4

  50. P.4

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