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The effective resistance between A and B...

The effective resistance between A and B in the figure is `(7)/(12)Omega` if each side of the cube has `1 Omega` resistance. The effective resistance between the same two points, when the link AB is removed, is

A

`(7)/(12)Omega`

B

`(5)/(12)Omega`

C

`(7)/(5)Omega`

D

`(5)/(7)Omega`

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