Question

Using source transformation (use at least 3 transformations) calculate the value Vx, if the source marked Y has a value of -15 V.

-20V a 80 b 45 d 050mA + Vx - Y 20 15 20

Answer 1

с 6 80 45 www ww + V- 20 215 20 Y WWW 50 mA here, apply x is the voltage across 452 resiston, Thevinin theorem befween condol ferminal weget, and ✓ - 20x20 v 367 - 20 x 20 15+20 so v Roth = 15820 15826 2 15 +20 36 Goe We conver Norton to the venin circuit at ferminal a ve here, Ig = somA Rie = 202 Rithx Ig 20x 50 x103 v IV We simplyff the cirenit Rth = 60/22 R=201 SOR ww 452 www Y -15V I2 1 0 (2 Nord, We apply KVL at the loop 6 and respectively th-Y = (20 +80) I, Y+7th = (45 +66) 12 to find if we solve the second equation. and

Y+th . 457 60 -15 - 80 7 1 А 95+ 60 7 - 185/7 375/7 А 0.49 A here, -ve sign indicate the cussent flowing opposite direction of the arrow. [here, R=452 x = Iz XR = 45x0.49 V 낮 22.2