What effect does resistance have on the flow of electricity?

Resistance in an electrical circuit plays a crucial role in determining how easily electrical current can flow. It acts as an opposing force to the movement of electrons. When resistance is present in a circuit, it limits the flow of electrons, thereby controlling the amount of current that can pass through. This relationship is fundamentally described by Ohm's Law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance. Therefore, higher resistance results in lower current for a given voltage, making it clear that resistance indeed limits the flow of electrons. Understanding this concept is essential for analyzing and designing electrical circuits, as it affects the overall performance and safety of any electrical system.