Posts

Showing posts from August, 2020

Electric charges and fields

Image
  Electric Charges and Fields   Topic:-  1-   Introduction.  2-   Electric Charge.  3-  Conductors and Insulators.  4-  Charging by Induction.  5-  Basic properties of electric charges.  6-  Coulomb’s law.   7- Force  between multiple charges.  8-  Electric field.  9-  Electric field lines. 10-  Electric flux. 11- Electric dipole. 12-  Dipole in a uniform external field. 13-  Continuous charge distribution. 14-  Gauss’s law. 15-  Application of Gauss's law. …………………………………………………………………………………………………………………………………………………………………………………………………………………………                                                           Introduction In 600 B.C. , Thales of Miletus , one of the founders of Greek science, first noticed that if a piece of amber is rubbed with a woolen cloth, it then acquires the property of attracting light feathers, dust, lint, pieces  of leaves, etc. In 1600 A.D., William  Gilbert , the personal doctor to Queen Elizabeth - I of England, made a systematic