Video lectures from the iCS group @ IIT Madras

EC1010: Electrical and Magnetic Circuits(Jan.-May 2013)

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See this page for information on how to view these videos.

Instructor: Nagendra Krishnapura

This is a course on circuit analysis. Problem sets and other instructions can be found here. Familiarity with basic calculus is assumed. At IIT Madras, this is a prerequisite course for Networks and Systems and Analog Circuits.

The lectures are also available in iPod format(320×240 video, AAC audio). Click on the link marked iPod next to each lecture to download these. The pdf files contain the journal snapshots.


  1. 2013-01-17: Introduction to the course
  2. 2013-01-18(iPod, pdf): Current and Voltage; Kirchhoff's Current and Voltage laws; Electrical circuit elements: Resistance, voltage source, and current source
  3. 2013-01-21(iPod, pdf): Capacitor, Inductor, controlled sources, mutual inductor
  4. 2013-01-22(iPod, pdf): Mutual inductor; Power and energy; Energy in a mutual inductor; Capacitors and inductors in series and parallel
  5. 2013-01-24(iPod, pdf): Constraint on mutual inductance; Solving for circuits-nodes, branches, trees; Nodal analysis
  6. 2013-01-28(iPod, pdf): Nodal analysis
  7. 2013-01-29(iPod, pdf): Modified nodal analysis
  8. 2013-01-31(iPod, pdf): Modified nodal analysis; Loop analysis with link currents; Mesh analysis of planar circuits with mesh currents
  9. 2013-02-04(iPod, pdf): Mesh analysis; Circuit theorems-substitution theorem
  10. 2013-02-05(iPod, pdf): Thevenin and Norton equivalent of circuits
  11. 2013-02-07(iPod, pdf): Maximum power transfer theorem; Tellegen's theorem; Reciprocity of resistive networks
  12. 2013-02-12(iPod, pdf): Reciprocity theorem; Pushing a voltage source through a node; Splitting a current source
  13. 2013-02-14(iPod, pdf): Exploiting symmetry in circuit analysis; Power transfer as available minus reflected power; Compensation theorem
  14. 2013-02-15(iPod, pdf): Two port parameters
  15. 2013-02-18(iPod, pdf): Two port parameters-reciprocal two ports, unilateral two ports, graphical representation
  16. 2013-02-19(iPod, pdf): Analysis of nonlinear circuits; Small signal approximation
  17. 2013-02-21(iPod, pdf): Analysis of nonlinear circuits; Small signal approximation
  18. 2013-02-26(iPod, pdf): Opamp and negative feedback
  19. 2013-02-28(iPod, pdf): Negative and positive feedback; Determining opamp signs for negative feedback
  20. 2013-03-05(iPod, pdf): Determining opamp signs for negative feedback; CCVS using an opamp; Input and output resistances of controlled sources
  21. 2013-03-07(iPod, pdf): CCVS using an opamp; Circuits with capacitors
  22. 2013-03-08: Step response of RC circuits; Response of a first order circuit to a constant and exp(st) (No recording: refer to last year's lectures)
  23. 2013-03-11(iPod, pdf): Response of first order circuit to exp(st), cos(wt); Response to sinusoids in terms of response of exp(jwt)
  24. 2013-03-12(iPod, pdf): Step response of first order RC/RL circuits
  25. 2013-03-14(iPod, pdf): Sinusoidal steady state response
  26. 2013-03-15(iPod, pdf): Second order differential equation; RLC circuit natural response
  27. 2013-03-18(iPod, pdf): RLC circuit natural response; Sinusoidal steady state response
  28. 2013-03-19(iPod, pdf): Sinusoidal steady state response; Phasor diagrams; Magnitude and phase versus frequency
  29. 2013-03-21(iPod, pdf): Magnitude and phase versus frequency; Bode plots; Sinusoidal steady state response of a series RLC circuit
  30. 2013-03-22(iPod, pdf): Sinusoidal steady state response of a series RLC circuit; Circuit analysis and circuit theorems with phasors and complex impedances; rms value of an ac signal; Determining opamp signs for negative feedback-revisited
  31. 2013-03-25(iPod, pdf): Complex power, real(average) power, apparent power, power factor, power factor correction; Conjugate matching for maximum power transfer
  32. 2013-03-26(iPod, pdf): Quality factor in terms of energy; Locus diagrams
  33. 2013-03-28(iPod, pdf): Locus diagrams; Phasor representation of a mutual inductor
  34. 2013-04-02(iPod, pdf): Ideal transformer; Impedance matching using a transformer and other networks
  35. 2013-04-04(iPod, pdf): Three phase power transmission; Real and reactive power
  36. 2013-04-05(iPod, pdf): Balanced and unbalanced loads; Power factor in a 3 phase balanced system; 3 phase power measurement
  37. 2013-04-08(iPod, pdf): Symmetrical component representation of unbalanced three phase quantities
  38. 2013-04-12(iPod, pdf): Practical resistors and capacitors; Introduction to magnetic circuits
  39. 2013-04-16(iPod, pdf): Flux density in a single loop; Solenoid; Solenoid with a ferromagnetic core; Flux density in a single loop; Solenoid with air/ferromagnetic core; Reluctance of a magnetic circuit
  40. 2013-04-18(iPod, pdf): Magnetic circuits; Inductance and mutual inductance of a coil with a ferromagnetic core; B-H nonlinearity
  41. 2013-04-19(iPod, pdf): Hysteresis loss; Eddy current loss
  42. 2013-04-23(iPod, pdf): Transformer miscellanea; Complex power and its relationship to time domain components of power

Problem sets

  1. Problem set 1(1st Feb. 2013): Basic elements; Nodal analysis; Modified nodal analysis
  2. Problem set 2(11th Feb. 2013): Circuit theorems
  3. Problem set 3(25th Feb. 2013): Circuit theorems
  4. Problem set 4(23rd Mar. 2013): Opamp circuits
  5. Problem set 5(23rd Mar. 2013): RC, RLC network response, differential equations
  6. Problem set 6(8th Apr. 2013): Sinusoidal steady state analysis, phasor diagrams, Bode plots
  7. Problem set 7(15th Apr. 2013): Locus diagrams, Three phase circuits
  8. Problem set 8(26th Apr. 2013): Magnetic circuits, transformers


  1. 2013-02-08: Quiz I
  2. 2013-03-04: Quiz II
  3. 2013-04-01: Quiz III
  4. 2013-04-22: Quiz IV