Two resistance r1 and r2 (r1< r2) are jo...

Two resistance `r_1` and `r_2` (r1< r2) are joined in parallel. The equialent resistane R is such that

`r_2ltR lt r_1 + r_2`

`Rgt r_1 + r_2`

`R lt r_1`

`r_1 lt R lt r_2`

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