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PHY 1020 – Physics II

At a glance

  • 4 lecture hours per week
  • 4 credits
  • II Semester

People

Course Objectives

  • Review Newton’s Theory of Gravitation and its use in orbital mechanics
  • Discuss the idea of charges and their interactions at a fundamental level and the laws and theorems governing these interactions
  • Elucidate fields, flux, and potentials in the context of gravitation, electrostatics, and magnetism
  • Introduce basic concepts of magnetostatics and magnetism and their union with electrodynamics
  • Identify basic elements of electrical circuits and circuit analysis
  • Explain emf induction and alternating currents
  • Analyse AC devices like dynamo generators and transformers

Prior Preparation

Course Description

  • Gravitation (Newton’s Law of gravitation; acceleration due to gravitation, ‘g’; variation of g with height and latitude; fields; gravitational potential energy; escape velocity; circular orbits – radius, time period, and energy of orbit; Kepler’s Laws)
  • Electrostatics (electric charge; electric dipole; conductors and insulators; Coulomb’s law; electric field; electric field due to a charged point and dipole; electric field due to charge distribution; electric flux; Gauss’ law and its applications; electrostatic potential; potential due to a point charge; equi-potential surface; potential energy in an external field; work done and energy; dipole in an electric field; dielectrics and polarization; capacitors and capacitance; parallel plate capacitor; energy stored in a capacitor)
  • Current Electricity (electric current and current density; resistance; Ohm’s law; resistivity of various materials; electrical energy; resistors in series and parallel; cell’s emf; Kirchhoff’s laws; Wheatstone bridge; RC circuits)
  • Magnetostatics (magnets; magnetic dipoles; pole strength; definition of magnetic fields; relation between electric and magnetic fields; Lorentz force; charged particle in a magnetic field-cyclotron; magnetic force on a current carrying wire; torque on a current loop; magnetic dipole moments)
  • Magnetic Fields of Current (Ampere’s circuital law, with application on a long wire and a solenoid; Biot-Savart Law; application of Biot-Savart Law – magnetic fields due to a long straight wire and a loop/coil (at centre and away from centre); magnetic forces between two parallel wires)
  • Electromagnetic Induction (Faraday’s law; Lenz’s Law; induced emf and current; induced electric fields; inductance and inductors; self-inductance; RL-circuit; energy stored in an inductor; energy density of a magnetic field; mutual inductance)
  • Alternating Current (alternating current and voltage; AC generator/dynamo; instantaneous and rms currents; AC circuits; impedance and reactance; power in AC circuits; transformers)

Learning Resources

  • Verma, H. C. (2011). Concepts of Physics, Vol. II. Bharati Bhawan Publishers.Halliday, D., Resnick, R., & Krane, K. S. (2001). Physics, Volume 2 (5th edition). John Wiley & Sons.