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A resistance R of thermal coefficient of...

A resistance R of thermal coefficient of resistivity `alpha` is connected in parallel with a resistance 3R having thermal coefficient of resistivity `2alpha`. Find the value of `alpha_(eff)`

A

`(5 alpha)/2`

B

`3 alpha`

C

`(2 alpha)/3`

D

`(5 alpha)/4`

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The correct Answer is:
D
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