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In the arrangement of resistances shown ...

In the arrangement of resistances shown below, the effective resistance between point `A` and `B` is

A

`20 Omega`

B

`30 Omega`

C

`90 Omega`

D

`110 Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) By the concept fo balanced Wheatstone bridge, the given circuit can be redrawn as follows
`R_(AB) = (30 xx 60)/((30 + 60)) = 20 Omega`
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