Free Course Image Electrical engineering

Free online courseElectrical engineering

Duration of the online course: 11 hours and 53 minutes

4.75

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Learn comprehensive electrical engineering concepts with this free online course by Khan Academy. Perfect for aspiring electricians, covering circuit analysis, Kirchhoff's laws, and more.

In this free course, learn about

  • Fundamentals of Current and Voltage
  • Ideal Elements and Basic Circuit Terminology
  • Series and Parallel Resistor Networks
  • Kirchhoff Laws and Fundamental Circuit Analysis Methods
  • Capacitors and RC Circuit Natural Response
  • Exponential Behavior and RC Step Response
  • Electrostatics and Electric Fields
  • Operational Amplifiers and Feedback Circuits
  • LC Circuits and Natural Response
  • Introduction to AC Signals and Trigonometry
  • Complex Numbers and Euler’s Formula
  • Impedance and Frequency-Domain AC Analysis
  • Nonlinear Devices: Diodes
  • Fourier Series and Orthogonality of Sinusoids
  • AC Phasors and Network Impedance

Course Description

The "Electrical Engineering" course is a comprehensive online curriculum designed to introduce and deepen your understanding of fundamental electrical engineering concepts. With a duration of 11 hours and 53 minutes, this course has earned an impeccable average rating of 5 out of 5 stars, indicating a high level of student satisfaction and course quality.

This professional course, falling under the Electrician subcategory, is meticulously structured to guide you through various foundational and advanced topics in electrical engineering. The course begins with an introduction to the basic principles of current and voltage, providing you with the necessary background to understand electrical systems and the behavior of electric circuits.

As you progress, you'll delve into the direction of current flow and the concept of conventional current. The course introduces ideal circuit elements and sources, forming the basis for more complex circuit analysis. Clear explanations of circuit terminology and the sign convention for passive components ensure that you have a solid grasp on the fundamental language used in the field.

Further on, the course covers series and parallel resistors, simplifying resistor networks, and the voltage divider principle. These sections equip you with practical techniques for analyzing and solving real-world electrical problems. The inclusion of Kirchhoff's current and voltage laws offers you essential tools for understanding the distribution of currents and voltages within a circuit.

To enhance your problem-solving skills, the course provides detailed setups and solutions to the application of these fundamental laws, as well as methods like the node voltage method and the mesh current method. These methods are vital for managing complex circuit analyses with multiple components.

By exploring capacitors and their behavior, the course teaches you about i-v equations and the natural and step responses of RC circuits, followed by intuitive and mathematical derivations. These modules are essential for understanding how capacitors function in different circuit configurations.

Electrostatics is another critical area covered, including Coulomb's Law and electric potential energy concepts, along with proofs and field calculations from infinite plates. The course offers valuable insights into the operational amplifier, its configurations (non-inverting, inverting, unity-gain, and summing circuits), and the feedback principle.

Advanced topics like the LC natural response, AC analysis, and trigonometric reviews introduce you to the behavior of inductors and the intricacies of alternating current systems. Understanding sinusoidal functions, complex numbers, Euler's formulas, and the impedance of various components broadens your analytical capabilities.

The course also delves into diodes and their graphical solutions, providing a thorough grounding in semiconductor devices. Further, the introduction to Fourier series and its applications allows you to break down complex waveforms into simpler components, useful in signal processing and electrical communications.

In summary, the "Electrical Engineering" course offers a well-rounded, critically acclaimed educational experience. It's ideal for anyone aiming to build a strong foundation in electrical engineering principles and applications, preparing you for professional work or further studies in the field.

Course content

  • Video class: Current | Introduction to electrical engineering | Electrical engineering | Khan Academy 09m
  • Exercise: _What is the atomic number of copper?
  • Video class: Voltage | Introduction to electrical engineering | Electrical engineering | Khan Academy 02m
  • Exercise: What is voltage analogous to in the video explanation?
  • Video class: Current direction | Electrical engineering | Khan Academy 05m
  • Exercise: What is the conventional direction assigned to electric current?
  • Video class: Conventional current 03m
  • Exercise: _What is the conventional current direction?
  • Video class: Ideal circuit elements | Circuit analysis | Electrical engineering | Khan Academy 06m
  • Exercise: Which equation represents Ohm's Law for a resistor?
  • Video class: Ideal sources | Circuit analysis | Electrical engineering | Khan Academy 02m
  • Exercise: What is the main difference between an ideal voltage source and an ideal current source in terms of an IV plot?
  • Video class: Circuit terminology | Circuit analysis | Electrical engineering | Khan Academy 08m
  • Exercise: _What is a node in a circuit?
  • Video class: Sign convention for passive components | Electrical engineering | Khan Academy 04m
  • Exercise: Which direction does the current go in passive components using the sign convention?
  • Video class: Series resistors | Circuit analysis | Electrical engineering | Khan Academy 11m
  • Exercise: What is the equivalent resistance of three resistors in series with values 100 ohms, 50 ohms, and 150 ohms?
  • Video class: Parallel resistors (part 1) | Circuit analysis | Electrical engineering | Khan Academy 11m
  • Exercise: What is the equivalent resistance of two resistors in parallel?
  • Video class: Parallel resistors (part 2) | Circuit analysis | Electrical engineering | Khan Academy 04m
  • Exercise: How do you calculate the equivalent resistance of multiple parallel resistors?
  • Video class: Parallel resistors (part 3) | Circuit analysis | Electrical engineering | Khan Academy 09m
  • Exercise: What is the parallel combination of two resistors in the special case where they have the same resistance value?
  • Video class: Simplifying resistor networks | Circuit analysis | Electrical engineering | Khan Academy 08m
  • Exercise: What is the equivalent resistance of the given circuit?
  • Video class: Voltage divider | Circuit analysis | Electrical engineering | Khan Academy 06m
  • Exercise: What is the voltage output of a voltage divider with specific resistors and input voltage?
  • Video class: Analyzing a resistor circuit with two batteries | Electrical engineering | Khan Academy 09m
  • Exercise: What is the current through the third resistor in the circuit?
  • Video class: Kirchhoff's current law | Circuit analysis | Electrical engineering | Khan Academy 06m
  • Exercise: What does Kirchhoff's Current Law state about a node in an electrical circuit?
  • Video class: Kirchhoff's voltage law | Circuit analysis | Electrical engineering | Khan Academy 06m
  • Exercise: What is Kirchhoff's Voltage Law (KVL)?
  • Video class: Application of the fundamental laws (setup) | Electrical engineering | Khan Academy 08m
  • Exercise: In circuit analysis, which law states that the sum of the voltages around a loop is zero?
  • Video class: Application of the fundamental laws (solve) | Electrical engineering | Khan Academy 08m
  • Exercise: What is the value of i1 in the circuit analysis?
  • Video class: Node voltage method (steps 1 to 4) | Circuit analysis | Electrical engineering | Khan Academy 09m
  • Exercise: What is a key step in the Node Voltage Method?
  • Video class: Node voltage method (step 5) | Circuit analysis | Electrical engineering | Khan Academy 06m
  • Video class: Mesh current steps 1 to 3 09m
  • Video class: Mesh current method (step 4 solve) 12m
  • Video class: Capacitor i-v equations 08m
  • Video class: A capacitor integrates current 09m
  • Video class: RC natural response intuition (1 of 3) 07m
  • Video class: RC natural response derivation (2 of 3) 10m
  • Video class: RC natural response example (3 of 3) 02m
  • Video class: Sketching exponentials 07m
  • Video class: Sketching exponentials - examples 07m
  • Video class: RC step response - intuition 10m
  • Video class: RC step response 1 of 3 setup 09m
  • Video class: RC step response 2 of 3 solve 09m
  • Video class: RC step response 3 of 3 example 03m
  • Video class: Coulomb's Law | Electrostatics | Electrical engineering | Khan Academy 11m
  • Video class: Electric potential energy | Electrostatics | Electrical engineering | Khan Academy 12m
  • Video class: Proof: Field from infinite plate (part 1) | Electrostatics | Electrical engineering | Khan Academy 13m
  • Video class: Proof: Field from infinite plate (part 2) | Electrostatics | Electrical engineering | Khan Academy 11m
  • Video class: What is an operational amplifier? 11m
  • Video class: Non-inverting op-amp circuit 12m
  • Video class: Feedback 05m
  • Video class: Inverting op-amp circuit 12m
  • Video class: Virtual ground 05m
  • Video class: Inverting and unity-gain op-amp with virtual ground 06m
  • Video class: Summing op-amp circuit 09m
  • Video class: LC natural response intuition 1 05m
  • Video class: LC natural response intuition 2 09m
  • Video class: LC natural response derivation 1 06m
  • Video class: LC natural response derivation 2 09m
  • Video class: LC natural response derivation 3 07m
  • Video class: LC natural response derivation 4 07m
  • Video class: LC natural response example 07m
  • Video class: AC analysis intro 1 06m
  • Video class: AC analysis intro 2 08m
  • Video class: Trigonometry review 07m
  • Video class: Sine and Cosine come from circles 04m
  • Video class: Sine of time 10m
  • Video class: Sine and cosine from rotating vector 03m
  • Video class: Lead Lag 07m
  • Video class: Complex numbers 08m
  • Video class: Multiplying by j is rotation 06m
  • Video class: Eulers formula 08m
  • Video class: Eulers formula magnitude 06m
  • Video class: Complex exponentials spin 06m
  • Video class: Eulers sine wave 03m
  • Video class: Euler's cosine wave 03m
  • Video class: Negative frequency 06m
  • Video class: Impedance 11m
  • Video class: AC analysis superposition 07m
  • Video class: Complex rotation 06m
  • Video class: Impedance vs frequency 08m
  • Video class: Inductor equations 12m
  • Video class: Inductor kickback 1 of 2 12m
  • Video class: Inductor kickback 2 of 2 07m
  • Video class: Diode 11m
  • Video class: Diode graphical solution 08m
  • Video class: Fourier Series introduction 05m
  • Video class: Definite integrals of sin(mx) and cos(mx) 06m
  • Video class: Definite integral of sine and cosine product 04m
  • Video class: Definite integrals of product of sines 08m
  • Video class: Integral of product of cosines 07m
  • Video class: Formula for first term in Fourier Series 06m
  • Video class: Fourier series coefficients for cosine terms 06m
  • Video class: Fourier coefficients for sine terms 06m
  • Video class: Finding Fourier coefficients for square wave 10m
  • Video class: Visualizing Fourier expansion of square wave 03m
  • Video class: ELI the ICE man 10m
  • Video class: KVL in the frequency domain 14m
  • Video class: Impedance of simple networks 11m

This free course includes:

11 hours and 53 minutes of online video course

Digital certificate of course completion (Free)

Exercises to train your knowledge

100% free, from content to certificate

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Course comments: Electrical engineering

sondra york

very well put together.

Yajnananda Yajju

good

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