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# Electrostatic Potential and Capacitance

Electric potential, potential difference, electric potential due to a point charge, a dipole and
system of charges; equipotential surfaces, electrical potential energy of a system of two point
charges and of electric dipole in an electrostatic field.
Conductors and insulators, free charges and bound charges inside a conductor. Dielectrics and
electric polarisation, capacitors and capacitance, combination of capacitors in series and in
parallel, capacitance of a parallel plate capacitor with and without dielectric medium between
the plates, energy stored in a capacitor.

### 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...

### 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 small distance. Suppose...

### 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 The left plate of C1 and...

### Capacitors and Capacitance

Capacitors A capacitor (formerly known as condenser) is a device that can store electronic charge and energy. All capacitors consist of a combination of...

### 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...

### 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...

### Equipotential Surfaces

Equipotential surfaces Surface over which the electric potential is same everywhere is called an equipotential surface. Equipotential surfaces are the graphical way to represent...

### 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...