Chapter 2 Coulomb's Law 2.1 Electric Charge.… 2-3 2.2 Coulomb's Law.............. 2-3 Animation 2.1:Van de Graaff Generator.................................. 2-4 2.3 Principle of Superposition.............. 2-5 Example 2.1:Three Charges.................... 2-5 2.4 Electric Field......... 2-7 Animation 2.2:Electric Field of Point Charges 2-8 2.5 Electric Field Lines....... 2-9 2.6 Force on a Charged Particle in an Electric Field 2-10 2.7 Electric Dipole… 2-11 2.7.1 The Electric Field of a Dipole. .2-12 Animation 2.3:Electric Dipole............ 2-13 2.8 Dipole in Electric Field........... .2-13 2.8.1 Potential Energy of an Electric Dipole ..2-14 2.9 Charge Density........... 2-16 2.9.1 Volume Charge Density................ 2-16 2.9.2 Surface Charge Density 2-17 2.9.3 Line Charge Density................ .2-17 2.10 Electric Fields due to Continuous Charge Distributions........................ .2-18 Example 2.2:Electric Field on the Axis of a Rod..... 2-18 Example 2.3:Electric Field on the Perpendicular Bisector.................. 2-19 Example 2.4:Electric Field on the Axis of a Ring.....................2-21 Example 2.5:Electric Field Due to a Uniformly Charged Disk.............................2-23 2.1ISummary 2-25 2.12 Problem-Solving Strategies.................... 2-27 2.13 Solved problems 2-29 2.13.1 Hydrogen Atom229 2.13.2 Millikan Oil-Drop Experiment .............. 2-30 2.13.3 Charge Moving Perpendicularly to an Electric Field 2-31 2.13.4 Electric Field of a Dipole................. 2-33 2-1Chapter 2 Coulomb’s Law 2.1 Electric Charge.....................................................................................................2-3 2.2 Coulomb's Law ....................................................................................................2-3 Animation 2.1: Van de Graaff Generator...............................................................2-4 2.3 Principle of Superposition....................................................................................2-5 Example 2.1: Three Charges....................................................................................2-5 2.4 Electric Field........................................................................................................2-7 Animation 2.2: Electric Field of Point Charges.....................................................2-8 2.5 Electric Field Lines..............................................................................................2-9 2.6 Force on a Charged Particle in an Electric Field ...............................................2-10 2.7 Electric Dipole ...................................................................................................2-11 2.7.1 The Electric Field of a Dipole......................................................................2-12 Animation 2.3: Electric Dipole.............................................................................2-13 2.8 Dipole in Electric Field......................................................................................2-13 2.8.1 Potential Energy of an Electric Dipole ........................................................2-14 2.9 Charge Density...................................................................................................2-16 2.9.1 Volume Charge Density...............................................................................2-16 2.9.2 Surface Charge Density ...............................................................................2-17 2.9.3 Line Charge Density ....................................................................................2-17 2.10 Electric Fields due to Continuous Charge Distributions....................................2-18 Example 2.2: Electric Field on the Axis of a Rod .................................................2-18 Example 2.3: Electric Field on the Perpendicular Bisector...................................2-19 Example 2.4: Electric Field on the Axis of a Ring ................................................2-21 Example 2.5: Electric Field Due to a Uniformly Charged Disk............................2-23 2.11 Summary............................................................................................................2-25 2.12 Problem-Solving Strategies ...............................................................................2-27 2.13 Solved Problems ................................................................................................2-29 2.13.1 Hydrogen Atom ........................................................................................2-29 2.13.2 Millikan Oil-Drop Experiment .................................................................2-30 2.13.3 Charge Moving Perpendicularly to an Electric Field ...............................2-31 2.13.4 Electric Field of a Dipole..........................................................................2-33 2-1