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Two wires of resistance R(1) and R(2) ha...

Two wires of resistance `R_(1)` and `R_(2)` have temperature coefficient of resistance `alpha_(1)` and `alpha_(2)` respectively. These are joined in series. The effective temperature coefficient of resistance is

A

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

B

`(sqrt(alpha_(1)alpha_2))`

C

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

D

`(sqrt(R_(1)R_(2)alpha_(1)alpha_(2))/(sqrt(R_(1)^(2) + R_(2)^(2))`

Text Solution

Verified by Experts

The correct Answer is:
C
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