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An Aluminium (alpha=4xx10^(-3)K^(-1)) re...

An Aluminium `(alpha=4xx10^(-3)K^(-1))` resistance `R_(1)` and a carbon `(alpha=-0.5xx10^(-3)K^(-1))` resistance `R_(2)` are connected in series to have a resultant resistance of `36Omega` at all temperatures. The values of `R_(1)` and `R_(2)` in `Omega` respectively are:

A

32, 4

B

16, 20

C

4, 32

D

20, 16

Text Solution

Verified by Experts

The correct Answer is:
C

`R_(1)alpha_(1) = R_(2)alpha_(2) and R_(1) + R_(2) = 36` ohm.
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