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When two identical wires made of differe...

When two identical wires made of different materials having resistivity `s_(1) and s_(2)` and conductivities `sigma_(1) and sigma_(2)` are connected in series, Effective resistivity is 

A

`(s_(1)+s_(2))/(2)`

B

`s_(1)+s_(2)`

C

`2(s_(1)+s_(2))`

D

`s_(1)s_(2)`

Text Solution

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The correct Answer is:
A
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