Course Contents » .. » Chapter 21 Kirchhoff 2 Notes Bookmark Evaluate Communicat

Question

Course Contents » .. » Chapter 21 Kirchhoff 2 Notes Bookmark Evaluate Communicate Print Find the currents flowing in the circuit in the figure below. Use the direction of the currents as shown in the figure. Explicitly show how you follow the steps in the Problem-Solving Strategies for Series and Parallel Resistors. (Hint: For resistors in series, you may want to add the resistances since they have a common current.) Ri 0.5 ? 22v 9 4.oV 14V 0.25 ? E 32V 16 ? 0.75 ? 1-0.72 A Submit Answer Incorrect. Tries 1/10 Previous Tries I20.75 A Submit Answer Submission not graded. Use more digits. Tries 0/10 Previous Tries Submit Answer Tries 0/10

Explanation / Answer

WE can see there are two loops in the figure,

So applying KVL in left loop,

22-20.5I1-4.25I3+4-16I1=0

36.5I1+4.25I3=26

Now, applying it in right loop,

-12I2+14-1.25I2-32+4.25I3-4=0

4.25I3-13.25I2=22

Also, we can see that

I1=I2+I3

solving these three equations

I1=0.62

I2=-1.4078

I3=0.787

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