Electric_Charges_and_Fields_Lessonwise_with_Homework.pptx

Class xii ppt

1. Lesson 1: Introduction to Electric Charges • Definition of electric charge • Types of charges: Positive and Negative • Basic properties of charge: Additivity, Quantization, Conservation • Conductors and Insulators • Charging by friction, conduction, and induction

2. Lesson 1: Introduction to Electric Charges – Homework 1. Define electric charge. 2. List three properties of electric charge. 3. Explain the process of charging by induction.

3. Lesson 2: Coulomb’s Law • Statement and explanation of Coulomb’s Law • Mathematical form and units • Vector form of Coulomb’s Law • Principle of Superposition • Numerical problems on Coulomb’s Law

4. Lesson 2: Coulomb’s Law – Homework 1. State Coulomb’s Law with formula. 2. Two charges of +2μC and +3μC are placed 2m apart. Find the force between them. 3. Explain the principle of superposition with an example.

5. Lesson 3: Electric Field and Field Lines • Concept of Electric Field • Electric Field due to a point charge • Electric field lines: properties and patterns • Field lines due to system of charges

6. Lesson 3: Electric Field and Field Lines – Homework 1. Define electric field. Write its SI unit. 2. Draw field lines for (a) single positive charge, (b) dipole. 3. Explain any two properties of electric field lines.

7. Lesson 4: Electric Dipole • Definition of electric dipole • Dipole moment • Electric field due to a dipole (axial and equatorial) • Torque on a dipole in uniform electric field

8. Lesson 4: Electric Dipole – Homework 1. What is an electric dipole? Define dipole moment. 2. Derive expression for electric field due to a dipole on axial line. 3. A dipole of moment 4 × 10⁻⁹ Cm is placed in a field of 3 × 10⁵ N/C. Find the torque.

9. Lesson 5: Continuous Charge Distribution & Gauss’s Law • Continuous charge distribution • Introduction to Gauss’s Law • Statement and derivation • Applications of Gauss’s Law (line charge, plane sheet, spherical shell)

10. Lesson 5: Continuous Charge Distribution & Gauss’s Law – Homework 1. State and explain Gauss’s Law. 2. Apply Gauss’s Law to find electric field due to an infinite line of charge. 3. What is the electric field outside a uniformly charged spherical shell?