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Simple circuit solving problem

  • Engineering
  • Thread starter qpham26
  • Start date
  • #1
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Homework Statement



For the figure:
https://sphotos-b.xx.fbcdn.net/hphotos-ash3/60194_493555593997294_154034279_n.jpg [Broken]

a.Determine which components are absorbing power
and which are delivering power.

b. Is conservation of power satisfied? Explain your
answer.


Homework Equations



P = IV

KVL


The Attempt at a Solution


First I go through the smaller right loop with D and E
use KVL I have VD = 10V

Use the bigger loop ABEC
-10V - 5V + VA + 3V = 0--->VA = 12V

Based on the current flow A and B are the source and the rest are absorbing power.
simultaneously solve for all the power:
PA = 60w
PB = 15w
PC = 25w
PD = 30w
PE = 20w

PA + PB = PC + PD + PE
=> so the conservation of power is satisfied.
 
Last edited by a moderator:

Answers and Replies

  • #2
CWatters
Science Advisor
Homework Helper
Gold Member
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Looks right to me.
 
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