I just need the total resistance seen by the voltage source

I just need the total resistance seen by the voltage source. Please show all your work.

DS Welcome, Alivia-Blackb × WeBWorK : JSharber-18e × https://webwork.math.nau.edu/webwork2/JSharber-188/Hmk-03-Fa16/3/ ious Problem List Next User Settings Grades Achievements Previous Problem List Results for this submission Entered Answer Preview Result Problems 350 19 18.42 incorrect Problem 1 Problem 2 Problem 3 Problem4 Problem 5 incorrect incorrect incorrect incorrect At least one of the answers above is NOT correct. 4 of the questions remain unanswered (10 points) Find 11 and VO in the circuit shown given that V1-17V. R1-10kS2. R2-7 R3-4 and R4-12k52 The total resistance seen by the voltage source = 350/19 The total current supplied by the voltage source-Ial - k2 m.A mA The current through R3 and R4 is I4 - m.A Note: You can earn partial credit on this problem Preview My Answers Submit Answers Your score was recorded You have attempted this problem 5 times You received a score of 0% for this attempt. Your overall recorded score is 0% You have 20 attempts remaining Email instructor 11:52 AM 9/18/2016

Solution

Ans) To find total resistance seen by the voltage source ,remove the voltage source V1 and find equivalent resistance

R3 in series with R4 gives=R3+R4=4k+12k=16k ohms

Now (R3+R4) in parallel with R2 gives Rx=(R3+R4)*R2/(R2+R3+R4)=16k*7k/(16k+7k)

Rx=4.869k ohms or (112/23)k ohms

Now total resistance seen by the voltage source Rt=R1+Rx=10k+4.869k=14.869k ohms or (342/23)k ohms

Rt=14.869k ohms or (342/23)k ohms