Question

Help please , using kirchoff rule

Q1) Find all the missing currents in the following circuits. a) 20V 'R3 50 R1 20 0 R2 10 0 - 2V 4V b) 20V R6 30 0 R1 R2 40 요 R3 40 0 R4 40 0 40 0 r R5 30 요

Answer 1

20V R = 200 Ft Iz R₂=lon tirlit 6 using Kirchoff's Voltage low in Loop (I 2+4 - IZ R2-(11+ z JR, "Is R530) [-vesign for high to low R₂ =52} Potential I 6 - Iz (5+10)-(I, + I2/20=0 uv 6- 35I2-20 I, = 0 ) 201, +3512= 6 - 1 For loop ③ 20 - (I + I2 ) 20 =o I + I2 = 1 ) I = 1-I2 From 20 (I- I₂ ) + 3512 = 20 + 15 Iz = IS Iz = -0.933A [-vesign shows current Flows in opposite direct I = 1.9 33A = 10 9334 current through Ri → I t Iz 1 A current through R2 - 0.933A = 0.9834 current through Rz 0.933A 0.933 A Equivalent resistance for R, and R₂ in 1 = 1 + 1 = 2 To R12=20 R₂ = 400 40 Net Resistance YOR Ri you RE 20+30+20+30 =loon Ron 0.2 A 6 = I2 what we have chear 20 I R12 40 yo 304 2200 ob circuit RA Y Equivalo 2or I 20 current through circult current through Rg and R6 current through Ri, R2 0.2A Rz, Ry = 0.1A - -