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Two wires of same dimension but resistiv...

Two wires of same dimension but resistivities `rho_1` and `rho_2` are connected in series. The equivalent resistivity of the combination is

A

`rho_(1)+rho_(2)`

B

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

C

`sqrt(rho_(1)rho_(2))`

D

`2(rho_(1)+rho_(2))`

Text Solution

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The correct Answer is:
B
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