Electric field lines demonstration CHAPTER 20 CHECKLIST
Definitions: conductor, insulator, electric field lines, electric field strength Section B experiments: To demonstrate repulsion and attraction of charges To demonstrate the separation of charges by induction To demonstrate that all static charge resides on the outside of a conductor To demonstrate that static charge tends to accumulate at a point To demonstrate electric field lines Q1 Q2
Formulae: Coulomb’s law: F ∝
______ d2
Electrostatic force between two charges: F =
Permittivity: ε = εr ε0 Electric field strength: E = F
STS: lightning rods, static uses, hazards Scientists: Faraday, Coulomb, Franklin Laws: Coulomb′s law