Visual Learning Lab
A hands-on space to learn the CETa material, not just look it up. Work through interactive calculators that show their algebra and redraw as you type, then test your vocabulary with a glossary match game.
Educational Calculators Lab
Each module solves the numbers, shows a step-by-step algebraic proof of how it got there, and draws a live SVG that redraws as you type. Use the tabs to switch modules. Fields accept engineering suffixes (e.g. 10k, 4.7M) where noted.
Ohm's & Joule's Law — enter any two
Power rectangle — P = V × I
shaded area = power (V × I)
diagonal slope = 1 / R
Reactance & the 90° phase shift
Phasor & waveforms
Voltage (V)
Current (I)
90° separation
Impedance vector — series R, XL, Xc
Impedance triangle
R
Net X
Z
RC time constant — τ = R × C
Charging curve
VC(t)
63.2% at 1τ
Series & parallel — same parts, two different totals
Series vs parallel wiring
equivalent value (≡)
Resonance — where XL and XC meet
Reactance vs frequency
XL (rises with f)
XC (falls with f)
resonance fr
Glossary Match
Tap a term, then tap the definition you think it belongs to. Correct pairs lock in green; a wrong guess flashes and clears. Each round pulls 5 terms at random from the 237-term glossary, so every set builds your working vocabulary a little more.