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Two wires of same dimension but resistiv...

Two wires of same dimension but resistivity `p_(1)` and `p_(2)` are connected in series. The equivalent resistivity of the combination is

A

`(rho_(1)X_(1)+rho_(2)X_(2))/(X_(1)+X_(2))`

B

`(rho_(1)X_(2)+rho_(2)X_(1))/(X_(1)-X_(2))`

C

`(rho_(1)X_(2)+rho_(2)X_(1))/(X_(1)+X_(2))`

D

`(rho_(1)X_(1)+rho_(2)X_(2))/(X_(1)-X_(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
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