Resistance at two temperatures: temperature coefficient or an unknown temperature

1. A.
   ${0.010}^{\circ}C^{- 1}$
2. B.
   ${0.033}^{\circ}C^{- 1}$
3. C.
   ${0.003}^{\circ}C^{- 1}$
4. D.
   ${0.042}^{\circ}C^{- 1}$

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1. A.
   ${0.033}^{\circ}C^{- 1}$
2. B.
   $- {0.033}^{\circ}C^{- 1}$
3. C.
   ${0.011}^{\circ}C^{- 1}$
4. D.
   ${0.055}^{\circ}C^{- 1}$

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1. A.
   $694^{\circ}C$
2. B.
   $1235^{\circ}C$
3. C.
   $1694^{\circ}C$
4. D.
   $1667^{\circ}C$

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1. A.
   $2\Omega$
2. B.
   $16\Omega$
3. C.
   $8\Omega$
4. D.
   $10\Omega$

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