The property of an electrical circuit that restricts the flow of current is called what?

The property of an electrical circuit that restricts the flow of current is known as resistance. Resistance is measured in ohms and plays a crucial role in determining how much current can flow through a circuit for a given voltage, according to Ohm's Law (V = I × R). When the resistance in a circuit increases, the flow of current decreases for the same voltage, illustrating the inverse relationship between resistance and current.

Understanding resistance is essential for electrical engineers and maintenance technologists, as it influences circuit design, component selection, and troubleshooting processes. Recognizing how various materials and components contribute to the total resistance in a circuit is critical when aiming for efficient electrical systems.