Static Electricity

• Like charges repel, while unlike charges attract.
• Coulomb's law: The force between two charged objects is directly proportional to the product of their charges, and inversely proportional to the square of the distance between them
• Electric field lines are imaginary lines that show the direction and strength of an electric field around a charge or object with charge. We draw the field lines as arrows coming out of the positively charged body, and lines going into the negatively charged body.
• An insulator does not allow electrons to move freely through its structure, whereas conductors do.
• Friction: rubbing two objects together to transmit charges (certain materials have a tendency to shed electrons, while others gain them)

  Conduction: touching of two objects, where the object transmits electrons and becomes positively charged

  Induction: proximity of a charged object to another object will cause a displacement of electrons, in doing so, polarizing the object
• Elementary charge: 1.602 x 10^-19 C (charge per electron)
• Electricity: a form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current.
• Unit of charge for electricity: Coulomb (C)