ELECTRIC CHARGES AND FIELDS PART 1 1 ELECTROSTATIC : Is the study of charge at rest. It is also called Frictional electricity or Static electricity. Some applications of electrostatics are (i) Different types of appliances work on the principle of electrostatics e.g., microphones, cathode ray tubes, components like capacitors in radio, television computer, radars etc. Sensitive instruments are protected from external electric fields with the help of electrostatic shielding. (ii) Natural phenomena like Lightning and thunders can be explained by using the knowledge of electrostatics. (iii) Energy conservation is done with the help of power factor correctors which work on the principle of electrostatics (iv) Spraying of paints and powdered coatings are done with the help of principle of electrostatics. (v) Pollution is being checked by methods of electrostatics by electrostatic precipitation of fly ash. 2 E