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Copper and carbon wires are connected in...

Copper and carbon wires are connected in series and the combined resistor is kept at `0^(@)C`. Assuming the combined resistance does not vary with temperature the ratio of the resistances of carbon and copper wires at `0^(@)C` is (Temperature coefficient of resistivity of copper and carbon respectively are `4xx(10^(-3))/(``^(@)C)` and `-0.5xx(10^(-3))/(``^(@)C)`

A

2

B

4

C

8

D

6

Text Solution

Verified by Experts

The correct Answer is:
C
`R_(1)alpha_(1) = R_(2)alpha_(2)`
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