Class 12 Physics, Part 1 (NCERT)
NCERT's Class 12 Physics Part 1, explained clearly and step by step. Ask how things happen, connect physics to technology and daily life, and practise with worked examples, exercises and summaries.
Electric Charges And Fields
Chapter 1
Chapter 1 · Start here
Electric Charges And Fields
Why a sweater sparks: electric charge, Coulomb's law, electric fields and field lines, dipoles, and Gauss's law.
Sprint 1
Electric Charge And Its Properties
What electric charge is, and why it is conserved and comes in whole units of e.
Sprint 2
Coulomb's Law
The force between two charges, as a size and as a vector.
Sprint 3
Superposition Principle
Add up the forces from several charges to find the total force.
Sprint 4
Electric Field
What an electric field is, and how to calculate it for one charge or many.
Sprint 5
Electric Field Lines And Flux
How field lines picture an electric field, and what electric flux measures.
Sprint 6
Electric Dipole And External Fields
The electric dipole: its moment, its field, and the turning force on it in a uniform field.
Sprint 7
Continuous Charge Distribution
Charge spread along a line, over a surface or through a volume.
Sprint 8
Gauss's Law
How the flux through a closed surface depends only on the charge inside it.
Sprint 9
Applications Of Gauss's Law
Use Gauss's law to find the field of a wire, a sheet and a shell.
Sprint 10
Review: Electric Charges And Fields
Mixed practice on force, field, flux and Gauss's law.