Dielectrics are of two types: (i) Non-Polar Dielectrics: When the centre of positive charge coincides with the centre of negative charge in a molecule, e.g., Nitrogen, Oxygen, CO 2 etc. (ii) Polar ...

Important revision notes of Class 12 Physics, Chapter 2 - Electrostatics Potential and Capacitance (based on NCERT books) are available in this article. These notes are helpful for revision purpose ...

Atoms are composed of three particles with an electric charge: electrons, protons and uncharged neutrons. Electrons have a negative charge, and protons have a positive charge. The negative charge of ...