Practical picture
Learn the electrical ideas the way you will actually use them around radios, power supplies, antennas and test equipment.
Technician exam model
T5 Electrical Principles
One complete SPARKA subelement: practical teaching, exam-focused facts, optional deeper notes, STEMulations, and question-pool practice.
Ham exam focus
The current Technician pool has 50 T5 questions in four groups. The exam selects four T5 questions — one from each group.
Subelement T5
Electrical Principles
Use these four study sections as the exam-ready path. Open the linked STEMulations whenever seeing the idea move is more useful than reading another paragraph.
T5A · 11 pool questions
Current, Voltage, Conductors, AC & DC
The basic electrical quantities, what makes electrons move, frequency, conductors and insulators, and the difference between AC and DC.
Study T5A → T5B · 13 pool questionsUnits, Metric Prefixes & Decibels
Convert amps, volts, hertz and capacitance units, then learn the three decibel relationships Technician questions lean on.
Study T5B → T5C · 12 pool questionsCapacitance, Inductance, Impedance & Power
Electric-field storage, magnetic-field storage, AC opposition, RF unit abbreviations and DC power calculations.
Study T5C → T5D · 14 pool questionsOhm's Law, Series & Parallel
Use E = I × R, solve the exam's arithmetic problems, and remember what stays the same in series and parallel circuits.
Study T5D →Close the loop
Quiz Me on T5
Use official 2026–2030 pool questions. Choose a group, turn hints on or off, and decide whether explanations appear only after a miss or after every answer.
Question-pool basis: NCVEC 2026–2030 Technician Class (Element 2), effective July 1, 2026 through June 30, 2030. Official pool questions are public domain.