question_answer

   Two resistances when connected m parallel give resultant value of , when connected in series the value becomes . Calculate the value of each resistance.

Answer:

                  We know that two resistances are in parallel and hence                                                                           (1)                 Given,                                                                                      ?(i) Now, same resistances are in series          (1)                 Given,                                           ?(ii) From eqs. (i) and (ii), we get Again using eqs. (ii), we have                                                               (1)                               Either,   or or                 Thus two resistances are and. (1)