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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)`(8R(R+r))/(3R +r)`
(c) `2r + 4R`
(d) `(5R)/2 + 2r` .
.

A

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

B

`(8R(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 redrawn as follows
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