Introduction Chapter 1 Electrostatic Field 1. 1 Coulomb's Law 1.1.1 Electric Charge 1.1.2 Coulomb's Law 1. 1. 3 The Principle of Superposition of Electric Forces 1. 2 Electric Field and Electric Field Intensity 1. 2. 1 Electric Field 1. 2. 2 Electric Field Intensity 1. 2. 3 Calculation of Electric Field Intensity 1. 3 Gauss Theorem of Electrostatic Field 1. 3. 1 Electric Field Lines 1. 3.2 Electric Flux 1. 3.3 Gauss Theorem 1. 3. 4 Find the Distribution of Electrostatic Field with Gauss Theorem 1. 4 Circuital Theorem of Electrostatic Field and Electric Potential 1. 4. 1 Circuital Theorem of Electrostatic Field 1. 4. 2 Electrostatic Potential Energy 1. 4. 3 Electric Potential and Electric Potential Difference 1. 4. 4 Calculation of Electric Potential 1. 4. 5 Equipotential Surface 1. 4. 6 Electric Potential Gradient 1. 5 Electric Dipole in Electrostatic Field 1. 5. 1 Torque on Electric Dipole in External Electric Field ����