# A Basic Course on Electric and Magnetic Circuits - Institution: IIT Kharagpur - Department: Electrical Engineering - Teacher: Prof. Ashok Kumar Pradhan - Level: Undergraduate - Language: English - Subjects: Engineering - Source: [NPTEL](https://nptel.ac.in/courses/108105479) - Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.) - Syllabus: [at the source](https://nptel.ac.in/courses/108105479) - Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words) This is a basic course on electric and magnetic circuits suitable for any first-year undergraduate engineering program. It covers the analysis of DC circuits, AC circuits using the phasor concept, three-phase circuits, magnetic circuits and transformer-equivalent circuits. In all the chapters, it explains the concepts lucidly, like reactive power in time and phasor domains and negative wattmeter readings in three-phase circuits. It provides a comprehensive way to solve circuit problems. Overall, the course focuses on simple methods to solve different circuit problems, including transformer as a magnetic and electric circuit. Intended audience: B.Tech. first year students of all engineering colleges and universities ## Lectures 1. [Lecture 01 : Electric systems](https://invisiblenetwork.ai/learn/nptel/108105479/bfeb77b2d5d8) (YouTube) 2. [Lecture 02 : Resistive circuit connections](https://invisiblenetwork.ai/learn/nptel/108105479/c53461324e58) (YouTube) 3. [Lecture 03 : Nodal analysis](https://invisiblenetwork.ai/learn/nptel/108105479/6e1277f21963) (YouTube) 4. [Lecture 04 : Mesh Analysis / Loop Analysis](https://invisiblenetwork.ai/learn/nptel/108105479/25498cc7baf8) (YouTube) 5. [Lecture 05 : Mixed sources – Meshand Nodal analysis](https://invisiblenetwork.ai/learn/nptel/108105479/a600249a4269) (YouTube) 6. [Lecture 06 : Superposition Theorem](https://invisiblenetwork.ai/learn/nptel/108105479/a53e1911349b) (YouTube) 7. [Lecture 07 : Thevenin’s Theorem and its applications](https://invisiblenetwork.ai/learn/nptel/108105479/0eb5f5af68f3) (YouTube) 8. [Lecture 08 : Norton’s theorem and Maximum power transfer theorem](https://invisiblenetwork.ai/learn/nptel/108105479/926ae565b8de) (YouTube) 9. [Lecture 09 : Review problems on DC circuits](https://invisiblenetwork.ai/learn/nptel/108105479/6886d2794d72) (YouTube) 10. [Lecture 10 : Average and RMS values Phasor representation of sinusoids Reactance](https://invisiblenetwork.ai/learn/nptel/108105479/1a7bc7582eef) (YouTube) 11. [Lecture 11 : Series AC circuits, R-L, R-C, R-L-C](https://invisiblenetwork.ai/learn/nptel/108105479/f4641d7909aa) (YouTube) 12. [Lecture 12 : KVL and KCL Series and parallel combination of impedance Star - delta transformations](https://invisiblenetwork.ai/learn/nptel/108105479/781705178b14) (YouTube) 13. [Lecture 13 : Power Curves for AC circuits](https://invisiblenetwork.ai/learn/nptel/108105479/85d413fbb0d2) (YouTube) 14. [Lecture 14 : Real and Reactive Power](https://invisiblenetwork.ai/learn/nptel/108105479/6d371273d46a) (YouTube) 15. [Lecture 15 : Loop current method, nodal analysis and theorems](https://invisiblenetwork.ai/learn/nptel/108105479/d4b071fa8304) (YouTube) 16. [Lecture 16 : Theorem-examples, maximum power transfer theorem](https://invisiblenetwork.ai/learn/nptel/108105479/7054f12fc829) (YouTube) 17. [Lecture 17 : Resonance](https://invisiblenetwork.ai/learn/nptel/108105479/c0de9beff4bc) (YouTube) 18. [Lecture 18 : Power Factor Improvement](https://invisiblenetwork.ai/learn/nptel/108105479/6f8d9a1fc33a) (YouTube) 19. [Lecture 19 : Review problems on AC circuits](https://invisiblenetwork.ai/learn/nptel/108105479/2735b845c8fb) (YouTube) 20. [Lecture 20 : Capacitor - properties series – parallel combinations](https://invisiblenetwork.ai/learn/nptel/108105479/23af53e7cfdb) (YouTube) 21. [Lecture 21 : Inductor - properties series – parallel combinations](https://invisiblenetwork.ai/learn/nptel/108105479/2bb2b5fd229e) (YouTube) 22. [Lecture 22 : Source free RC and RL Circuits](https://invisiblenetwork.ai/learn/nptel/108105479/2181ec5eb972) (YouTube) 23. [Lecture 23 : Step response of RC and RL Circuits](https://invisiblenetwork.ai/learn/nptel/108105479/4a32ddeaea28) (YouTube) 24. [Lecture 24-a : Review Problems on RL and RC Transients](https://invisiblenetwork.ai/learn/nptel/108105479/f7b18d867f95) (YouTube) 25. [Lecture 24-b : AC Transients](https://invisiblenetwork.ai/learn/nptel/108105479/c80f6933c357) (YouTube) 26. [Lecture 25 : Basics on three phase systems](https://invisiblenetwork.ai/learn/nptel/108105479/0f9b955258ad) (YouTube) 27. [Lecture 26 : Line and phase currents and voltages in star connected systems](https://invisiblenetwork.ai/learn/nptel/108105479/41b3cebbcec8) (YouTube) 28. [Lecture 27 : Line and phase voltages and currents in delta connected systems](https://invisiblenetwork.ai/learn/nptel/108105479/b72e0bca764a) (YouTube) 29. [Lecture 28 : Three phase power](https://invisiblenetwork.ai/learn/nptel/108105479/e41d56291acb) (YouTube) 30. [Lecture 29 : Three phase power and Power factor](https://invisiblenetwork.ai/learn/nptel/108105479/e61bed363a49) (YouTube) 31. [Lecture 30 : Measurement of 3 - phase power](https://invisiblenetwork.ai/learn/nptel/108105479/7173ae778d09) (YouTube) 32. [Lecture 31 : Magnetic flux, flux density, magnetic field strength,.......](https://invisiblenetwork.ai/learn/nptel/108105479/e99cb95bc1ba) (YouTube) 33. [Lecture 32 : Reluctance Equivalent magnetic circuit Solving Magnetic Circuits](https://invisiblenetwork.ai/learn/nptel/108105479/a029c361eb86) (YouTube) 34. [Lecture 33 : Solving Magnetic Circuits](https://invisiblenetwork.ai/learn/nptel/108105479/d35c4512f1e5) (YouTube) 35. [Lecture 34 : Hysteresis loop Hysteresis and Eddy Current loss](https://invisiblenetwork.ai/learn/nptel/108105479/8ceb60357c92) (YouTube) 36. [Lecture 35 : Self and Mutual inductances Dot Convention](https://invisiblenetwork.ai/learn/nptel/108105479/9a15c21533b6) (YouTube) 37. [Lecture 36 : Solving Magnetic Coupled Circuits](https://invisiblenetwork.ai/learn/nptel/108105479/bab3f8084e76) (YouTube) 38. [Lecture 37 : Magnetic Circuit applications](https://invisiblenetwork.ai/learn/nptel/108105479/9dc4d8cd227d) (YouTube) 39. [Lecture 38 : Transformer Basics,The emf equation](https://invisiblenetwork.ai/learn/nptel/108105479/03793dfe5bdc) (YouTube) 40. [Lecture 39 : Ideal Transformer,Impedance Referred to Primary](https://invisiblenetwork.ai/learn/nptel/108105479/4fb47162950b) (YouTube) 41. [Lecture 40 : Practical transformer,Transformer equivalent circuit diagram](https://invisiblenetwork.ai/learn/nptel/108105479/39cbdb4970e6) (YouTube) 42. [Lecture 41 : Voltage Drop and Voltage Regulation Calculation](https://invisiblenetwork.ai/learn/nptel/108105479/626ec856fb31) (YouTube) 43. [Lecture 42 : Efficiency of Transformer](https://invisiblenetwork.ai/learn/nptel/108105479/21bcabafacc1) (YouTube) 44. [Lecture 43 : Transformer Tests,Transformer Applications](https://invisiblenetwork.ai/learn/nptel/108105479/3988bfd5992c) (YouTube)