Question

Find the Thevenin equivalent circuit for the portion of the following network external to the Resistor R4. From the equivalent circuit you then are required to find the current through the R4 20 V, R3 w 4k12 1 = 2 mA 200 (0) Riikl v RB32 RB2kQ Quantity Calculated values - ZTH Етн 1R4

Answer 1

Question 20V R3 X 4K2 1-2 MALO (4) R &lk - R2 Esks P4 & 2kw 0 find ith cov, u & lk circuit Digram for to find an . from above fig. Vo = 200 + V; = 200, -0 Apply kel at Node ve V2 - 20v1 + Vez - Iso :: 3V2-60V, + V2 = 30 4N2 - Gov, = 37 equation o Vi = ve ... from 4V2 - 60 xV2 -37 & Vz = 31

: Vo = 21 I . By KVL, V: Ve +41 VEL. 94.42 581 5. Z Zn = 6.625 kr ② find En 20 V, V2 ¢k 20Al4 Laki . Von No - Vth ... (from above circuit ) Applying super node in above ckt V2-V, 220V, V2 = 2ovi VI = Uz - ® : Apply kal at super node ☺t 2) .-27 V + V2 = 0 -6 + 30, + V2 = 0. BV, + V2 = 6

But Vi ve Vis Ver : 3 X V2 + 12 = 6. I V2 = 6 No = 42 3.5. 2 5 Volds But V2 = Ein = 5.25 Volts. C 3 Thevenin equivalent corcent 6.625 ks Wh W IP4 :.5.2517 2k E Rq 1 - . t By ahm's Law 5.25 R R4+2th (6.16 25+27103 ... IR4 =..0.6.088103 Amp

Quantity Calcelated Values zin 6.625 kih 1 . Eth 5.25 Volts IR 4 0.608 m Amp