Unit 6 : Electric Field

The unit Electric field has got 60 periods.
  1. Electrostatic force (15 periods)
    • Electrostatic force between two charges
      • Coulomb's law
    • Electric field intensity
    • Electric field lines
      • Around a point charge
      • Around two point charges
      • Between two charged parallel plates
    • Field intensity of a point due to a point charge
    • Graphical representation of the variation of field intensity
  2. Flux model (15 periods)
    • Electric flux
    • Gauss's theorem
    • Finding electrostatic field intensities using Gauss's theorem
      • Around a point charge
      • Near an infinite charge plate
      • Around a charged conducting sphere
        • Outside the sphere
        • On the surface of the sphere
        • Inside the sphere
      • Field intensity at a distance r from an infinitely long charged thin wire
  3. Electrical potential (15 periods)
    • Definition of potential at a point in an electrostatic field
    • Potential at a point due to a point charge (derivation is not necessary) \[V = \frac {1}{4\pi\epsilon} \frac {Q}{r} \]
    • Potential at a point due to distribution of point charges
    • Potential difference between two points
    • Work done in moving a charge across a potential difference
    • Potential energy of a charge in an electric field
    • Potential energy of a system with two charges
    • Potential gradient
    • Relationship between potential gradient and electric field intensity
    • Equipotential surfaces
      • Equipotential surfaces in different fields
        • Near a point charge
        • Near like point charges
        • Near unlike point charges
  4. Electric capacitance (15 periods)
    • Definition of capacitance
    • Parallel plate capacitor
    • Derivation of the equation, \[C = \frac {k \epsilon_\circ A}{d} \]
    • Capacitance of a spherical conductor (spherical capacitors are not included)
    • Combination of capacitors
      • Series combination
      • Parallel combination
    • Energy stored in a charged capacitor
    • Derivation of expression of energy
    • Distribution of charges on conductors having different shapes
      • Point discharge (corona discharge)
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