Question

#2 would help a lot thank you

Staa a· First, guess the answer to three places. "( b. Then, use a calculator to find the answer to three places. For the circuit on the right, find: a. The equivalent resistance seen by 2. 60 2 120 2 b. The voltage at Point A assuming that WM c. The voltage at the point between the d. The current in the 70 0hm resistor. the voltage source. the potential at B is 0. 60 and 120 ohm resistors. 70.02 20.02 20.0 2 240 V 3. Find the equivalent resistance at the input a,b. R2 R3 0e a 40Ω RT 60 Ω 4. Find the current in the 30 ohm resistor. R1200 R-500 Rp30Ω 10V R, 200

Answer 1

#2)a) redraw the circuit by opening voltage source ,as we are going to calculate equivalent resistance across it.

b) redraw the circuit as

zemes conn echion a) 40L Reg Ri Ra senes connechin 60A R1 + R 2 90 1 Ro Ro qy ーう poa Roa- RP2 120 Re: 60 t 60

40r → Redraw again bon A 60人 2401 20A 240 v B (ovolt) By voltage diviston, ナ bon 24ον. VA - 240 χ 60 Nei VA 60+bo VA=240x60 ! 3x60
c)
c) From (b) voltage across VAB = VA-VB-VA- 20V 40nA By vottoge diision 201 60几 on 240V 120 +60 20人 (2on 2 80

d)

for #3 resistors values are not clearly visible so I will help you for #4 here as extra

J) Porn (b) VAB= VA.VBニYp-O-12OV din ce both res is tors se dame to) ohm's law, 1 -V 70入 170 704 二1:33 A VAB 204

#4) To find current through 30 ohms resistor first we need to find total current from source. Since two resistors 50 ohms and 30 ohms are in parallel the total current will divide between them by current division rule.

4) First find Ra, se en lov aouTCo 20人 2 68 15 n 201 Ro 80 Rai: 58-75 /L // Req

current diision Bi +22 R 2 P3+ R 2 8 o
hope you understand this procedure... Feel free to comment your doubts. I will be always there to help you out. Upvote if you like this answer. Thanks in advance.