Dielectrics and Polarisation
Dielectrics
Dielectrics are non-conducting substances. In contrast to conductors, they have no or the negligible number of charge carriers. In a dielectric, free movement of...
Electrostatics of Conductors
Electrostatics of Conductors
Conductors contain mobile charge carriers. In metallic conductors, these charge carriers are electrons. In a metal, the outer (valence) electrons part away...
Equipotential Surfaces
Equipotential surfaces
Surface over which the electric potential is same everywhere is called an equipotential surface.
Equipotential surfaces...
Capacitance of a Parallel Plate Capacitor
Capacitance of a parallel plate capacitor
A parallel plate capacitor consists of two large plane parallel conducting plates separated by a...
Capacitors and Capacitance
Capacitors
A capacitor (formerly known as condenser) is a device that can store electronic charge and energy.
All...
Combination of Capacitors in Series and in Parallel
Capacitors in series:
Fig.a shows capacitors C1 and C2 combined in series.
Fig.a. Combination of two capacitors in series
...
Energy stored in a Capacitor
Energy stored in a capacitor
The energy U stored in a capacitor of capacitance C, with charge Q and voltage V is
The electric energy density...
Potential Energy
Potential Energy in an External Field
The potential energy of a single charge:
The external electric field E and the corresponding external potential V may vary...
Electrostatic Potential
We know that central forces are conservative in nature i.e., work done on any particle moving under the influence of conservative forces does not...