Question

This is the third time ive posted this question...and have received wrong answers for all parts, please provide an accurate answer! thank you! (a,b,c)

(10%) Problem 11: Consider the circuit in the diagram, with sources of emf listed below. Randomized Variables &1 = 21 V E2 = 44 V Ez = 12.5 V E4 = 43 V 33% Part (a) Find I in amps. I=0.53 X Attempts Remain * 33% Part (b) Find I in amps. 12 = 0.47 X Attempts Remain Tin amns

Answer 1

n & 4 sor111 R colord R5 2012. & = 21V €2=440 Ez= 12,5V &q=43V Erk N2 e R2 th 401 a &q=0.2or 0.50r R3 782 h LE JE -0.0S considering mode é we = Consi as the reference node, i.e. Ne = 0; get: Mat & (Vat21) a - R +8j+R5) (25.10) 12 = Vat Eq (at44) (22f R2) (40.50) -30.5-val Ez-&- va 12.5-43 -val 78.25 Rz f& fra 78.25 Applying ka at node 'a', we get - 다 -{"** (Nat44 40.50 25.10 Iz = 1+12 -30.5-va Va+21 78.25 va =-29-916 V 1)་ 21 [Aus ca) [Ans (3) .: Iza Na+21 =-0.3552 A. 25.10 varau) = 0.347 & A 40.50 (-30.5-va -0.0074 A. 78125 Mary [Aus.(o) 3 I3