Resistivity

Resistivity is a property of materials that describes how strongly they resist the flow of electric current. Think of it like a road: a smooth, straight road allows cars (or electricity) to travel quickly, while a rough, bumpy road makes it harder for them to move. Materials with low resistivity, like copper or aluminum, conduct electricity well, making them ideal for wires. In contrast, materials with high resistivity, like rubber or glass, do not conduct electricity well and are often used as insulators to keep current contained. Resistivity is crucial in designing electrical circuits and devices.