Electrostatics and Electric Charge

Chapter-1|Electric Charges and Fields | NCERT 12th Physics:

Electrostatics: Electrostatics is the study of electric charges at rest. Here we study the forces, fields, and potentials associated with the static charges.

Electric Charges: Electric charge in an intrinsic property of elementary particles of matter which gives rise to the electric force between various objects.

Electric charge is a scalar quantity. Its SI unit is Coulomb(C). A Proton has positive charge(+e) and an electron has negative charge(-e).

e = 1.6×10⁻¹⁹ C

Large-scale matter that consists of equal number of electron and proton is electrically neutral. If there is an excess of electrons, the body has a negative charge and an excess of proton results in a positive charge.

 

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