Problem 4 a) Using Kirchhoffs rules, calculate the current in Ri with the direct

Question

Problem 4 a) Using Kirchhoffs rules, calculate the current in Ri with the directions indicated in the figure below. Assume that R1 = 3.00kQ, R2 = 5.00 , R3-7.00kQ, E,-75.0 V, E2 = 65.0 V and E,- 85.0 V NOTE: If the current points in the opposite direction indicated, please use a negative sign. Submit Answer Tries 0/6 b) Calculate the current in R2. Submit Answer) Tries 0/6 c) Calculate the current in R3 Submit Answer Tries 0/6 d) Calculate the magnitude of the potential difference between points c and f Submit Answer Tries 0/6 Due Friday March 09 11:59 am (EST)

Explanation / Answer

from junction rule at f,we get i1+i3=i2 ...(i)

From Kirchhoff's loop rule in loop abcf

75-65+i2*5000+i1*3000=0

Or, 3000i1+5000i2=-10...(ii)

From Kirchhoff's loop rule in loop abde,we get

75-i3*7000-85+i1*3000=0

Or, 3000i1-7000i3=10...(iii)

Solving (i),(ii) and (iii) we get

i1=-0.28 mA

i2=-1.83 mA

i3=-1.55 mA

potential difference between c and f = 65+1.83*10-3*5000=74.15 V

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.