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Twelve resistors of equal value R are co...

Twelve resistors of equal value R are connected in the form of a cube. Effective resistance between diagonals of the cube is

A

2 R

B

12 R

C

`5/6` R

D

8 R

Text Solution

Verified by Experts

The correct Answer is:
C
Loop ABCDVA
`-IR -1/2 R - IR + V= 0`

`rArr V/I = 5/2 R`
`V/(3I) = 5/6 R`
`R_(eq) = (5R)/6`
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