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Electromagnetic Fields

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1439 min

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Electrical Engineering

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Why enroll

This course builds a strong foundation in electromagnetics, which is essential for all EEE students. It explains complex topics in an easy and clear way. It also prepares learners for advanced engineering subjects and real-world applications.

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Is this course for you?

You should take this if

You work in Automotive
You're a Electrical Engineering professional
You have 3+ years of hands-on experience in this field
You want to build skills in Engineering & Design, Project Management

You should skip if

You're new to this field with no prior experience
You need a different specialisation outside Electrical Engineering
You need live interaction with an instructor

Course details

This course introduces the fundamental concepts of electromagnetics for Electrical and Electronics Engineering (EEE) students. It begins with a clear review of vector algebra and vector calculus, which are essential tools for understanding electromagnetic fields. Students learn how electric and magnetic fields are represented and analyzed in space. The course then covers electrostatics, focusing on electric charges, electric fields, and electric potential. Important laws such as Coulomb’s Law and Gauss’s Law are explained in a simple and step-by-step manner. Magnetostatics is introduced to help students understand magnetic fields produced by steady currents. The relationship between electricity and magnetism is discussed using practical examples. Time-varying fields are also covered to explain how changing electric and magnetic fields interact. Mathematical concepts are always linked to physical meaning for better understanding. By the end of the course, students gain a strong foundation needed for advanced subjects in power systems, electronics, and communication engineering.

Source: nptelhrd [Youtube Channel]

Course suitable for

Key topics covered

Introduction to Vectors
Introduction to Vectors (Continued)
Coulomb’s Law
Electric Field
Electrostatic Potential
The Gradient
Gauss’s Law
Poisson’s Equation
Energy Stored in the Electric Field
Example Problems in Electrostatics
Fields in Materials
Fields in Material Bodies
Electric Displacement Vector
Capacitors
Method of Images
Poisson’s Equation in Two Dimensions
Electric Field Near Sharp Edges and Points
Magnetic Field – Part 1
Magnetic Field – Part 2
Stokes’ Theorem
The Curl of a Vector Field
Magnetic Field Due to a Current Loop
Ampere’s Law
Examples of Ampere’s Law
Inductance

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

25 lectures23 hr 59 min

Introduction to Vector
55 min
Introduction to vector(contd..........)
57 min
Coulomb's Law
57 min
Electric Field
56 min
Electro Static Potential
57 min
The Gradient
61 min
Gauss's Law
57 min
Poisson's Equation
58 min
Energy in the Field
58 min
Example Problems in Eletro Statics
63 min
Fields in Materials
57 min
Fields in Material Bodies
57 min
Displacement Vector
55 min
Capacitors
57 min
Method Of Image
57 min
Poisson's Equation 2Dimensions
58 min
Field near Sharp Edges and Points
57 min
Magnetic Field--1
57 min
Magnetic Field-2
60 min
Stokes Theorems
58 min
The Curl
58 min
Field Due to Current Loop
55 min
Ampere's Law
58 min
Examples of Ampere,s Law
58 min
Inductance
58 min

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Engineering & Design

Project Management

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Questions and Answers

Q: You're reviewing a failed EMC chamber test and googling "motor inverter electromagnetic field corrosion on copper busbar". The HV busbars show green corrosion after 200 hours at 85°C/85%RH with a 20 kHz switching field present. What degradation mechanism is actually driving this?

A: A: The AC field biases ionic transport in the moisture layer. That's how you get dendrites bridging features. B: You'd need an electrolyte and a sustained DC potential; the pattern wouldn't follow field lines. C: Eddy losses at 20 kHz on a solid bar are tiny here; the temperature rise isn't there. D: Sulfides discolor, but they don't track field intensity or show filament growth.

Q: Final day of homologation. You're searching "radiated emissions fail only at 150 kHz inverter". The vehicle fails CISPR 25 only at 150 kHz, 3% over the limit, and only under high load. What root cause best fits all symptoms?

A: A: Load-dependent, low-frequency, and radiated points straight at common-mode on long conductors. B: DM issues peak higher and show up in conducted tests first. C: Calibration errors don't care about torque demand. D: A ground loop would smear across bands, not spike at one frequency.

Q: During a design review you're typing "how to reduce magnetic field coupling between parallel cables 50 A automotive". Two 50 A DC cables run 300 mm in parallel. Space is tight. What change gives the biggest reduction in magnetic field coupling?

A: A: Twisting collapses the loop area; that's the lever on magnetic coupling. B: Ampere-turns stay the same, so the field doesn't care. C: Shields stop E-fields; H-fields walk straight through at DC. D: A small spacing change barely moves mutual inductance.

Q: On-site pre-SAT you're googling "verify EMC fix before CISPR retest common mode choke". A common-mode choke was added to fix a 3% margin fail. What's the correct verification step before booking the chamber?

A: A: You're validating the mechanism, not the paperwork. Current drops or it doesn't. B: DCR tells you about losses, not EMI suppression. C: You can't reproduce chamber conditions in a bay. D: Mounting matters, but it won't show margin recovery.