Every electric circuit follows one simple rule: Voltage (V) = Current (I) × Resistance (R). • Voltage (V): The “push” that moves electrons through a wire — like water pressure in a hose. • Current (I): The flow rate of electrons, measured in amperes (A). • Resistance (R): How much a material resists that flow, measured in ohms (Ω). When voltage increases, current rises — unless resistance increases to slow it down. That’s why thin wires heat up faster and why your phone charger needs precise resistors. Real-world examples: ⚡ Turning up a lab power supply → more voltage → more current → brighter LED. 💡 Long extension cord → more resistance → dimmer light or slower charge. 🎧 Headphones rated for higher impedance need more voltage to reach the same loudness. Ohm’s Law in design: Engineers use it constantly to size components, predict power draw, and prevent overheating. It’s also how we check if a circuit is safe — the math behind every fuse and circuit breaker. Try this: If your...