Fixed resistors are designed for and made of which type of material?

Fixed resistors are designed to provide a specific resistance value and are typically made of materials that have predictable and stable resistive properties. Resistive nickel/chrome wire is a popular choice for certain applications because it provides excellent stability over temperature variations, good durability, and consistent performance. Nickel and chrome have favorable resistive characteristics that allow for precise control of electrical resistance, making them suitable for applications requiring reliable performance over time.

Other materials mentioned, while relevant in different contexts, do not provide the same level of performance for fixed resistors. For example, plastic insulation is used for insulating components and ensuring safety but does not have resistive properties. Conductive metal wire can transmit electricity but is not designed specifically to offer a consistent resistance level. Carbon composite materials can be used for resistors, especially in variable resistors (like potentiometers), but they do not match the stability and precision of nickel/chrome wire in fixed resistors.