Verified Solution • 2025–26 Session moderate

QJEEM22Pha6fb: JEE Main 2022 Physics - Class 12 JEEM22Pha6fb Solution: Resistance of the wire is measured as 2 and 3 at 10 C and 30 C…

Resistance of the wire is measured as 2 Ω\Omega and 3 Ω\Omega at 10 ∘^\circ C and 30 ∘^\circ C respectively. Temperature co-efficient of resistance of the material of the wire is :

Multiple Choice Options

  • A 0.033 ∘^\circ C −- 1
  • B −- 0.033 ∘^\circ C −- 1
  • C 0.011 ∘^\circ C −- 1
  • D 0.055 ∘^\circ C −- 1

Step-by-Step Verified Solution

R10 = 2 = R0(1 + α\alpha ×\times 10)

R30 = 3 = R0(1 + α\alpha ×\times 30)

On solving

α\alpha = 0.033/ ∘^\circ C

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