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Two conductors have the same resistance at `0^(@)C` but their temperature coefficients of resistance are `alpha_(1) and alpha_(2)`. The respective temperature coefficients of their series and parallel combinations are nearly

A

`alpha_(1)+alpha_(2),(alpha_(1)alpha_(2))/(alpha_(1)+alpha_(2))`

B

`alpha_(1)+alpha_(2),(alpha_(1)+alpha_(2))/(2)`

C

`(alpha_(1)+alpha_(2))/(2),(alpha_(1)+alpha_(2))/(2)`

D

`(alpha_(1)+alpha_(2))/(2),alpha_(1)+alpha_(2)`

Text Solution

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The correct Answer is:
A
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