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Learn Electrical Engineering

From Ohm's law to signals and power systems, the engineering of electricity.

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Electrical engineering deals with electricity, electronics and electromagnetism, from the chips in your phone to the power grid. Circuit analysis is the foundation: Ohm's law, Kirchhoff's laws and techniques for solving networks of resistors, capacitors and inductors. From there the field branches into electronics, digital logic, signals and systems, control, communications and power. Beginners start with DC circuits and simple measurements, then move to AC and active components. Learnr assembles an electrical engineering course at your level, with compact interactive lessons that drill the circuit analysis until it is second nature.

How to learn Electrical Engineering, step by step

Master DC circuit analysis. Learn Ohm's law, series and parallel combinations, and Kirchhoff's current and voltage laws. Then practice node voltage and mesh current methods plus Thevenin and Norton equivalents until you can solve a multi-loop circuit without hesitating.
Build and measure on a breadboard. Get a breadboard, resistors, LEDs and a multimeter. Predict voltages and currents on paper, then measure them. Stick to low-voltage battery or bench supplies, and never experiment with mains wiring, which can kill.
Learn energy storage and transients. Capacitors and inductors store energy, which brings time into the picture. Solve RC and RL charging circuits with first-order differential equations and confirm the time constant on an oscilloscope or in a simulator like LTspice.
Move to AC with phasors. Represent sinusoids as complex numbers and treat capacitors and inductors as impedances. That turns AC analysis back into algebra and opens up filters, resonance and real, reactive and apparent power.
Add active devices and digital logic. Study diodes, transistors as switches and amplifiers, and the ideal op-amp rules. In parallel, learn Boolean algebra, logic gates, flip-flops and simple state machines, which lead to microcontrollers and FPGAs.
Branch into signals and keep practicing. Learn the Fourier transform and frequency response, the language of communications and control. Short Learnr problem sets each day keep circuit analysis automatic while you pick a specialty.

What you'll learn

Analyze DC circuits using Ohm's law, Kirchhoff's laws and Thevenin equivalents
Use phasors and impedance to analyze AC circuits
Design simple op-amp amplifiers and filters
Build combinational and sequential digital logic circuits
Measure real circuits safely with a multimeter and oscilloscope

What's inside your Electrical Engineering course

A sample path Learnr builds for Electrical Engineering. Your real course adapts to your goal and level.

1. Charge, current, voltage, power and resistance
2. DC circuit analysis techniques
3. Capacitors, inductors and transients
4. AC circuits, phasors and power
5. Semiconductors, op-amps and digital logic
6. Signals, systems and power engineering

How long does it take to learn Electrical Engineering?

DC and AC circuit fundamentals take about 3 to 6 months at 5 hours a week. Becoming a practicing electrical engineer takes an accredited four-year degree, and in the US signing off on public projects requires a Professional Engineer license after supervised experience.

What you need before you start

Algebra and trigonometry to start. Calculus, complex numbers and differential equations become essential for AC analysis, transients and signals.

Common mistakes to avoid

Working on mains voltage or household wiring as a learner. Use low-voltage supplies, and leave building wiring to licensed electricians.
Losing track of sign conventions and current directions. Pick a convention, label every element and stick with it throughout a problem.
Relying only on simulators without building real circuits, which hides practical issues like component tolerance, noise and bad connections.

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Electrical Engineering questions, answered

What is the difference between electrical and electronics engineering?

Electrical engineering traditionally covers power generation, transmission and large systems, while electronics focuses on small-signal circuits and devices. Most degree programs teach both, and the terms overlap heavily.

Do I need a license to be an electrical engineer?

Many electrical engineers in industry work without one, but in the US a Professional Engineer license is required to approve designs for public projects. It typically requires an accredited degree, the FE exam, supervised experience and the PE exam.

Is electrical engineering math heavy?

Yes. Circuit analysis uses algebra and complex numbers, transients use differential equations, and signals use Fourier and Laplace transforms. The math is the main tool of the field.