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If the temperature of a resistance wire is gradually increased, its resistance will

Physics
NECO 2002

If the temperature of a resistance wire is gradually increased, its resistance will

  • A. decrease gradually
  • B. first increase and then decrease
  • C. first increase and then remain the same
  • D. increase gradually
  • E. remain the same
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Correct Answer: Option D
Explanation

In a metallic resistance wire (a conductor), as the temperature increases, the atoms vibrate more, causing more collisions with the free electrons. This increases the wire's resistance to the flow of current.

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