At 1000°C the resistance of a wire is found to be four times its resistance at 0°C. The…

Physics · Class 12 · CBSECurrent Electricity

At 1000°C the resistance of a wire is found to be four times its resistance at 0°C. The temperature coefficient of resistance of the material of the wire will be:

  1. \(\frac {0.004} {{^\circ} \mathrm{C}}\)
  2. \(\frac {0.002} {{^\circ} \mathrm{C}}\)
  3. \(\frac {0.003} {{^\circ} \mathrm{C}}\)
  4. \(\frac {0.001} {{^\circ} \mathrm{C}}\)

Answer

(A) 0.004 ^ C

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