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What is the effective resistance between...

What is the effective resistance between the points A and C in the following network?

A

`R/3`

B

`(2R)/3`

C

`(3R)/2`

D

`R/2`

Text Solution

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The correct Answer is:
B
B and D are at the same potential
`:.` There is no current in BD.
Resistances `2R,2R` and `2R` are in parallel.
`:.` Effective resistance `=(2R)/3`
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