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SYLLABUS II PUC PHYSICS - 33 (THEORY) UNIT-I Chapter 1: ELECTRIC CHARGES AND FIELDS

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Electric charges and their properties: Additivity of charges,  quantisation of charges  and conservation of charges - Coulomb’s law: Statement, explanation (only in free space) and expression in vector form - Definition of SI unit of charge - Superposition principle: Statement, application to find the force between multiple charges.

Electric field: Definition of electric field - Mention of expression for electric field due to a point charge -Application of superposition principle to find electric field for a system of charges.

Continuous charge distribution: Definitions of surface, linear and volume charge densities - Mention of expression for electric field due to a continuous charge distribution.

Electric dipole: Definition of electric dipole and dipole moment - Derivation  of  electric field due to a dipole (a) at any point on its axis (b) at any point  on  its equatorial plane -Derivation of the torque on an electric dipole in an uniform electric field and expression in vector form.

Electric field lines: Properties and representation - Electric flux: Concept of electric flux - Area element vector, electric flux through an area element - Gauss’s Law: Statement and its applications to find electric field due to (a) infinitely long straight charged wire, (b) uniformly charged infinite plane sheet and  (c)  uniformly charged thin spherical shell (field inside and outside), Numerical Problems.



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