Lesson 2

• Atom may gain or lose electrons.

  INDUCED CHARGES
• What is the measure of the attraction of an atom to an electron?

  Electron Affinity
• It is arranged in the order of increasing electron affinity from top to bottom.

  TRIBOELECTRIC SERIES
• Requires physical contact between a charging body and a neutral body.

  Charging by conduction
• Body may be charged without physical contact with a charged body

  Charging by induction
• This happens when negative charges on the neutral body are attracted toward the charging body if the latter is positive.

  Polarization
• Charges can neither be created nor destroyed, it only transferred from one body to another.

  CONSERVATION OF CHARGE
• Discovered that the magnitude of the electrical force between two charged particles

  COULOMB
• Is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them.

  ELECTRICAL FORCE