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The effective resistance between points ...

The effective resistance between points P and Q of the electrical circuit shown in the figure is

A

`(2Rr)/(R+r)`

B

`(8(R+r))/(3R+r)`

C

`2r+4R`

D

`(5R)/(2)+2r`

Text Solution

Verified by Experts

The correct Answer is:
A

The circuit can be reduced to the one given alongside
`R_(e)=(2rR)/(r+R)`Hence, (A) is correct
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