Electric Charges & Fields | Concepts, Derivations & NCERT Solutions Class 12
Chapter One: ELECTRIC CHARGES AND FIELDS 1.1 INTRODUCTION Common Electrostatic Phenomena: We experience sparks or crackles when taking off synthetic clothes or sweaters, especially in dry weather. Lightning during thunderstorms is another example of electric discharge. Electric shocks can also be felt when opening a car door or holding a bus bar after sliding. Reason for Phenomena: These experiences are due to the discharge of electric charges accumulated through the rubbing of insulating surfaces. Static Electricity: This phenomenon is referred to as the generation of static electricity. Static: Anything that does not move or change with time. Electrostatics: Deals with the study of forces, fields, and potentials arising from static charges . 1.2 ELECTRIC CHARGE Historical Discovery: Thales of Miletus, Greece, around 600 BC, discovered that amber rubbed with wool or silk cloth attracts light objects. Origin of "Electricity": Coined from the Greek word ...