💡 How to use this page: Tap any section to expand. Simulations are placed right after each concept — try them while the idea is fresh.

• 🌍 Why This Matters

• 🧮 Maths You Need Here
• Key Equations
• ⚡ 1 — Static Electricity & Electric Charge (4.1)

• 🧲 2 — Electric Fields (4.2)

• ➡️ Current Foundations — What Actually Flows?

• 🔋 3 — Electrical Quantities (4.3)

• 📈 4 — Resistance, Ohm's Law & I–V Graphs (4.4)

• 🔌 5 — Electric Circuits (4.5)

• ⚡ 6 — Alternating Current (A.C.) vs Direct Current (D.C.)