What This Faculty Must Help Students Do
Electrical Engineering learners often fail because they recognise formulas but cannot decide which law, circuit model, diagram or unit conversion applies. A useful LearnZA product must train the student to read a circuit, list known values, choose a law, substitute correctly, calculate with units, interpret the result and check whether the answer is physically reasonable.
Problem First
Products must be built around questions, worked solutions and exam-style marking, not long passive notes.
Formula With Meaning
Every formula must show where each symbol comes from and how units move through the calculation.
Diagrams Matter
Circuit diagrams, phasor sketches, waveforms, truth tables and machine equivalent circuits must be visible where needed.
Electrical Engineering Core Modules
Circuit Analysis
Ohm's law, series and parallel networks, Kirchhoff's voltage law, Kirchhoff's current law, mesh analysis, nodal analysis, Thevenin and Norton equivalents.
AC Fundamentals
Sinusoidal waveforms, RMS values, impedance, reactance, phasors, power factor, resonance and three-phase basics.
Electronics
Diodes, rectifiers, Zener regulation, BJTs, FETs, op-amps, filters, amplifiers and waveform interpretation.
Digital Systems
Binary, hexadecimal, logic gates, Boolean algebra, truth tables, Karnaugh maps, adders, flip-flops and counters.
Machines and Power
Transformers, motors, generators, efficiency, torque, losses, power systems, protection and load calculations.
Measurements and Control
Instrumentation, calibration, sensors, measurement error, block diagrams, feedback and introductory system response.
Quick reference
Electrical Formulas Students Must Know
| Concept | Formula | Use |
|---|---|---|
| Ohm's law | V = IR | Voltage equals current multiplied by resistance. |
| Power | P = VI | Electrical power in watts when voltage and current are known. |
| Power alternatives | P = I2R; P = V2 / R | Use with Ohm's law depending on the values given. |
| Series resistance | RT = R1 + R2 + ... | Add resistors in series. |
| Parallel resistance | 1 / RT = 1 / R1 + 1 / R2 + ... | Use for parallel resistor networks. |
| Capacitive reactance | XC = 1 / (2πfC) | Capacitor opposition in AC circuits. |
| Inductive reactance | XL = 2πfL | Inductor opposition in AC circuits. |
| Impedance | Z = R + jX | AC opposition as a complex quantity. |
| Apparent power | S = VI | Measured in VA for AC circuits. |
| Real power | P = VI cos θ | Measured in watts when power factor is included. |
| Three-phase power | P = √3 VLIL cos θ | Use line voltage and line current in balanced three-phase systems. |
| Transformer ratio | Vp / Vs = Np / Ns | Relates primary and secondary voltage to turns ratio. |
Worked Solution Standard For Electrical Products
- Redraw or label the circuit before calculating.
- List given values with units.
- Choose the correct law or theorem.
- Substitute values before simplifying.
- Show final answer with the correct unit.
- Explain whether the result makes sense in the circuit.
Electrical Engineering Product Roadmap
These products are listed as planned workbooks only. They must pass the LearnZA commercial quality gate before they can be sold.
Electrical Engineering Circuit Analysis Workbook
DC and AC circuit questions, Ohm's law, Kirchhoff's laws, network reduction, nodal and mesh analysis, Thevenin, Norton, phasors, power and full worked solutions.
Electrical Machines Exam Practice Manual
Transformers, DC machines, induction motors, synchronous machines, equivalent circuits, torque, efficiency and practical fault-style questions.
Power Systems Fundamentals Workbook
Single-phase and three-phase power, power factor correction, transmission basics, protection concepts and calculation-rich memo answers.
Electronics and Semiconductor Devices Workbook
Diodes, rectifiers, transistors, op-amps, filters, biasing, waveform interpretation and worked circuit explanations.
Digital Electronics and Logic Workbook
Number systems, Boolean algebra, logic gates, truth tables, Karnaugh maps, flip-flops and sequential circuit practice.
Electrical Measurement and Instrumentation Workbook
Measurement errors, sensors, bridges, oscilloscopes, calibration, instrument loading and data interpretation.
Control Systems Intro Workbook
Block diagrams, feedback, transfer functions, stability language, time response and practical interpretation questions.
Engineering Mathematics for Electrical Students
Complex numbers, matrices, differential equations, Laplace basics, vectors and calculator-safe worked examples.