CBSE Class 12-science Answered
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Asked by royamisha521 | 26 May, 2020, 10:44: AM
Equivalent resistance is Req
![](https://images.topperlearning.com/topper/tinymce/imagemanager/files/a0ee73081fc52d4d852f7e69677864815ecd289ec944d5.35370052circuit7.png)
![R subscript e q end subscript space equals space 2 r space plus thin space fraction numerator r R subscript e q end subscript over denominator r plus R subscript e q end subscript end fraction space
open parentheses r space plus space R subscript e q end subscript close parentheses R subscript e q end subscript space equals space 2 r squared space plus space 2 r R subscript e q end subscript plus space r R subscript e q end subscript
r R subscript e q end subscript plus R subscript e q end subscript squared space equals space 2 r squared space plus space 2 r R subscript e q end subscript plus space r R subscript e q end subscript
R subscript e q end subscript squared space minus space 2 r R subscript e q end subscript space minus space 2 r squared space equals space 0
R subscript e q end subscript space equals fraction numerator 2 r space plus-or-minus square root of 4 r squared plus 8 r squared end root over denominator 2 end fraction space
R subscript e q end subscript space equals space fraction numerator 2 r plus space 2 r square root of 3 over denominator 2 end fraction space equals space r open parentheses 1 plus square root of 3 close parentheses](https://images.topperlearning.com/topper/tinymce/cache/4ed72690dcd77de51058133b042010c5.png)
Answered by Shiwani Sawant | 26 May, 2020, 20:11: PM
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