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Two resistors when connected in series net resistance is 5 Omega and when they are connected in parallel net resistance is 1.2 Omega. What are these resistors ? |
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Answer» 2` Omega , 3 Omega` SERIES connection `R_(1) + R_(2) = 5 Omega` .... (1) Parallel connection `(R_(1) R_(2))/(R_(1) + R_(2)) = 1.2 Omega ""` .... (2) By using VALUE of (1) in (2), `(R_(1)R_(2))/(5) = 1.2` `THEREFORE R_(1) R_(2) = 6 ""`.... (3) From given options , (A) 2 `Omega, 3 Omega` MATCHES with EQUATION (1) and (3) . |
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