An interactive 8th-grade science quiz covering resistors, Ohm's Law, circuits, electromagnets, and more.
A fully browser-based quiz app built to help students study electricity and circuits at the 8th grade level. Every time you start a quiz, a random selection of questions is pulled from a bank of 106 questions — so no two sessions are the same.
After finishing, you can enter Review Mode to go through every question and see not just the correct answer, but why each wrong answer is wrong — which is where the real learning happens.
- 106-question bank — randomized every session so the quiz stays fresh
- Adjustable length — choose anywhere from 1 to 106 questions per session
- Two question types:
- Multiple choice with 4 options
- Calculation questions with a number input and unit dropdown (A / V / Ω / W)
- Score screen — animated score ring with correct/incorrect breakdown
- Full review mode — for every multiple-choice question, see:
- Why the correct answer is right
- Why someone might choose each wrong answer — and why that reasoning fails
- Calculation review — side-by-side your answer vs. the correct answer
- No account, no login, no install — runs entirely in the browser
| Category | Examples |
|---|---|
| Ohm's Law | V = IR, solving for V / I / R |
| Power formulas | P = IV, P = I²R, P = V²/R |
| Series circuits | Total resistance, current, voltage drops |
| Parallel circuits | Total resistance, voltage, current splits |
| Batteries | Series vs. parallel battery configurations |
| Electrical diagrams | Symbols for resistors, switches, bulbs, batteries |
| Conductors & insulators | Materials, free electrons, real-world examples |
| Electromagnets | Strength factors, on/off control, applications |
| Electromagnetic induction | Generators, Faraday's discovery |
| AC vs DC | Differences, sources, safety |
| Historical figures | Volta, Ohm, Ampère, Watt, Faraday, Edison, Tesla, Franklin, Kirchhoff, Ørsted |
| Safety & protection | Fuses, circuit breakers, short circuits, overloading |
| Score | Message |
|---|---|
| 100% | Perfect Score! |
| 80–99% | Great Job! |
| 60–79% | Not Bad |
| 40–59% | Keep Practicing |
| Below 40% | More Practice Needed |
Built with Claude Code