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The metal rods of same length and same a...

The metal rods of same length and same area of cross-section are connected in series. If their condcutivites are `120 Wm^(-1) and 240 Wm^(-1) K^(-1)` the effective conductivity of the combination is

A

`150 Wm^(-1)" " K^(-1)`

B

`160 Wm^(-1)" " K^(-1)`

C

`180 Wm^(-1)" " K^(-1)`

D

`80 Wm^(-1)" " K^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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