Electrical resistance

Electrical resistance is a measure of how much a material opposes the flow of electric current. Think of it like a pipe: a narrow or rough pipe makes it harder for water to flow, similar to how high resistance restricts electrical flow. Materials with low resistance, like copper, allow electricity to pass easily, while materials with high resistance, like rubber, block it. Resistance depends on the material’s properties, length, and thickness. It determines how much energy is lost as heat when current flows, and is key to designing electrical circuits and devices.