Does anyone know how i can solve this question plz?

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1 Answer
Feb 23, 2018

The voltages across #R_1#, #R_2# and 1.2 k are each equal to 100 V.

This tells us

(i) the resistance #R_1 = {100 V}/{50 mA} = 2# k
(ii)The current through #I_3# is #{100 V}/{1.2 k} = 83.33# mA
(iii) The current #I_2# = 250 mA - 83.33 mA = 166.67 mA
(iv) The resistance #R_2 = {100 V}/{166.67 mA} = 0.6# k