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Current Electricity question

2024 · 31 Jan · Shift 1 · Q75
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Current Electricity question

2024 · 31 Jan · Shift 1 · Q75

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
Two conductors have the same resistances at 0∘C0^{\circ} \mathrm{C}0∘C but their temperature coefficients of resistance are α1\alpha_1α1​ and α2\alpha_2α2​. The respective temperature coefficients for their series and parallel combinations are :
  1. A
    α1+α2,α1α2α1+α2\alpha_1+\alpha_2, \frac{\alpha_1 \alpha_2}{\alpha_1+\alpha_2}α1​+α2​,α1​+α2​α1​α2​​
  2. B
    α1+α22,α1+α22\frac{\alpha_1+\alpha_2}{2}, \frac{\alpha_1+\alpha_2}{2}2α1​+α2​​,2α1​+α2​​
  3. C
    α1+α2,α1+α22\alpha_1+\alpha_2, \frac{\alpha_1+\alpha_2}{2}α1​+α2​,2α1​+α2​​
  4. D
    α1+α22,α1+α2\frac{\alpha_1+\alpha_2}{2}, \alpha_1+\alpha_22α1​+α2​​,α1​+α2​
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