Electricity & Magnetism

The basic concept of electrostatics and frictional electricity is described in this unit. This unit includes the electric field and electric potential due to a point charge; different types of capacitors, their combinations and applications; the electric current and thermal and magnetic effects of current; significance of magnetic effect of current and electromagnetic induction; generation and transmission of current power and the problems of low voltage and load shedding.

1. Electric Charge and Electric Field

  1. Electric Charges
  2. Coulomb’s Law
  3. Electric Field
  4. Electric Dipole
  5. Electric Field due to Dipole
  6. Electric Dipole in Uniform Field
  7. Electric Lines of Force
  8. Electric Flux and Gauss' Law
  9. Electric Field due to Point Charge
  10. Electric Field due to Long Line Charge

2. Electric Potential and Capacitors

  1. Electric Potential and Potential Difference
  2. Potential Due to Point Charge
  3. Potential Due to Electric Dipole
  4. Potential Energy of System of Point Charges
  5. Relation Between Electric Field and Potential
  6. Behavior of Conductors in Electric Field
  7. Capacitance
  8. Capacitance of Spherical Conductor
  9. Parallel Plate Capacitor
  10. Relative Permittivity or Dielectric Constant
  11. Grouping of Capacitors
  12. Energy Stored in Capacitor
  13. Dielectrics and Dielectric Polarization

3. Electric Current

  1. Electric Current
  2. Ohm’s Law
  3. Resistance and Resistivity
  4. Grouping of Resistors
  5. Types of Resistors
  6. Temperature Dependence of Resistance
  7. Electromotive Force (emf) and Potential Difference
  8. Kirchhoff’s Rules
  9. Wheatstone Bridge
  10. Potentiometer
  11. Comparison of EMFs of Two Cells 
  12. Determination of Internal Resistance of Cell
  13. Drift Velocity of Electrons
  14. Power Consumed in an Electrical Circuit

4. Magnetism and Magnetic Effect of Electric Current

  1. Magnets and their Properties
  2. Magnetic Field Lines
  3. Biot-Savart’s Law
  4. Applications of Biot-Savart’s Law
  5. Ampere’s Circuital Law
  6. Applications of Ampere’s Circuital Law
  7. Force on Moving Charge in Magnetic Field
  8. Force on a Current Carrying Conductor in a Uniform Magnetic Field
  9. Force Between two Parallel Wires Carrying Current
  10. Motion of Charged Particle in Uniform Field
  11. Current Loop as a Dipole
  12. Torque on a Current Loop
  13. Galvanometer
  14. Ammeter
  15. Voltmeter

5. Electromagnetic Induction and Alternating Current

  1. Faraday’s Law of Electromagnetic Induction
  2. Lenz’s Law
  3. Inductance
  4. Self Inductance
  5. LR Circuits
  6. Mutual Inductance
  7. Alternating Currents and Voltages
  8. AC Source Connected to a Resistor
  9. AC Source Connected to a Capacitor
  10. AC Source Connected to an Inductor
  11. Series LCR Circuit
  12. Power Generator
  13. A.C. Generator or Alternator
  14. Dynamo (DC Generator)
  15. Transformer
  16. Types of Transformers
  17. Efficiency of Transformers