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2. ELECTROSTATIC POTENTIAL AND CAPACITANCE

The chapter explores the fundamental concepts of electrostatic potential and capacitance. It explains the nature of electric potential energy, the significance of conservative forces, the definition and calculation of capacitance, and the behavior of capacitors in series and parallel configurations. Additionally, it discusses dielectrics and their effects on capacitance, as well as the energy stored in capacitors and the principles of electrostatics relating to conductors.

Sections

  • 2

    Electrostatic Potential And Capacitance - Introduction

    The section delves into electrostatic potential and capacitance, explaining the fundamental principles governing electrostatic interactions between charges.

    Learning Practice

  • 2.1

    Electrostatic Potential

    The electrostatic potential is the work done per unit charge in moving a charge from infinity to a point in an electric field.

    Learning Practice

  • 2.2

    Electrostatic Potential Due To A Point Charge

    This section details the concept of electrostatic potential, particularly focusing on its calculation for a point charge and its relation to electric potential energy.

    Learning Practice

  • 2.3

    Electrostatic Potential Due To An Electric Dipole

    This section discusses how to compute the electrostatic potential generated by an electric dipole and contrasts it with the potential from a point charge.

    Learning Practice

  • 2.4

    Electrostatic Potential Due To A System Of Charges

    This section discusses electrostatic potential and potential energy due to various charge configurations, emphasizing the principles of conservative forces and the work done in moving charges in an electric field.

    Learning Practice

  • 2.5

    Equipotential Surfaces

    Equipotential surfaces are surfaces where the electric potential is constant at all points, and the electric field is always perpendicular to these surfaces.

    Learning Practice

  • 2.5.1

    Electrostatic Potential Due To A System Of Charges

    The section discusses the potential energy of a system of static charges, how to calculate it, and the concept of electrostatic potential energy difference.

    Learning Practice

  • 2.6

    Potential Energy Of A System Of Charges

    The section discusses the potential energy of a system of static charges, how to calculate it, and the concept of electrostatic potential energy difference.

    Learning Practice

  • 2.7

    Potential Energy In An External Field

    Learning

  • 2.7.1

    Potential Energy Of A Single Charge

    This section explains the concept of potential energy associated with a single charge in an electric field and how to quantify it.

    Learning Practice

  • 2.7.2

    Potential Energy Of A System Of Two Charges In An External Field

    This section discusses the potential energy associated with a system of two charges placed in an external electric field.

    Learning Practice

  • 2.7.3

    Potential Energy Of A Dipole In An External Field

    This section discusses the potential energy of a dipole placed in a uniform electric field, detailing the associated torque and work done.

    Learning Practice

  • 2.8

    Electrostatics Of Conductors

    This section discusses the electrostatic behavior of conductors, including key properties such as the zero electric field within conductors and how charge distribution occurs.

    Learning Practice

  • 2.9

    Dielectrics And Polarisation

    This section discusses dielectrics, their behavior in electric fields, and the concept of polarization, which leads to the understanding of how materials react to electric fields.

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  • 2.10

    Capacitors And Capacitance

    The section introduces capacitors as devices that store electrical energy by separating two conductive plates with an insulator, and defines capacitance as the ratio of charge to voltage.

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  • 2.11

    The Parallel Plate Capacitor

    This section discusses the concept of parallel plate capacitors, their construction, and how they store electrostatic energy between two conducting plates.

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  • 2.12

    Effect Of Dielectric On Capacitance

    This section discusses the influence of dielectric materials on the capacitance of capacitors.

    Learning Practice

  • 2.13

    Combination Of Capacitors

    This section outlines how capacitors can be combined in series and parallel configurations, detailing their resulting effective capacitance.

    Learning Practice

  • 2.14

    Energy Stored In A Capacitor

    This section discusses the energy stored in capacitors, explaining how charge transfer leads to energy storage and the relationship between capacitance, voltage, and stored energy.

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  • 2.15

    Summary

    The section discusses the electrostatic potential and capacitance, emphasizing the concepts of potential energy differences, electric potential due to various charge configurations, and the principles governing capacitors.

    Learning Practice

  • 2.16

    Exercises

    This section contains exercises related to the concepts of electrostatics, including potential and capacitance.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Electrostatic forces are co...
  • The potential at a point is...
  • A capacitor is defined by i...

Final Test

Revision Tests

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