Question:medium

The ratio of the resistance of conductor at temperature 15\(^\circ\)C to its resistance at temperature 37.5\(^\circ\)C is 4:5. The temperature coefficient of resistance of the conductor is

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\(R \propto (1 + \alpha T)\). Set up a ratio equation and solve for \(\alpha\) algebraically. Cross-multiply carefully.
Updated On: Apr 8, 2026
  • \(\dfrac{1}{25}\) \(^\circ\)C\(^{-1}\)
  • \(\dfrac{1}{50}\) \(^\circ\)C\(^{-1}\)
  • \(\dfrac{1}{80}\) \(^\circ\)C\(^{-1}\)
  • \(\dfrac{1}{75}\) \(^\circ\)C\(^{-1}\)
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The Correct Option is D

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