Wiring and componentsQuestion 839 of 1506

Why are some metal alloys chosen for precision resistors?

  1. Their temperature coefficient is near zero, so resistance barely changes
  2. Their temperature coefficient is large and positive, so they stay stable
  3. They have a negative coefficient that exactly cancels copper's
  4. They have no resistance at all, so they cannot heat up
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Correct answer: Their temperature coefficient is near zero, so resistance barely changes

A near-zero coefficient keeps the resistor value stable.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 12.6: Temperature Coefficient of Resistance

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Questions last reviewed: 18 October 2026