question_answer 59)

    In the circuit in Fig. 9 (Ep).22 (a), find the value of RC  

Answer:

                  Let the currents through the various arms be as shown in Fig 9(EP).22(b)                                 In closed circuit AB1 CEDA                                 Or ?(i)                 In closed circuit AB1 GHJDA                                 Or                 Or              ?(ii)                 Let V be the potential difference across Hand J, then                                 Or                 Putting this value of  in (ii), we get                 Or Or                                 Or Or                       or Putting value of  in  (i),we get  or