Which Components Are Absorbing or Delivering Power in This Circuit?

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SUMMARY

The discussion focuses on analyzing a circuit to determine which components absorb or deliver power, specifically identifying components A and B as power sources while components C, D, and E absorb power. Using Kirchhoff's Voltage Law (KVL) and the power formula P = IV, the calculated power values are PA = 60W, PB = 15W, PC = 25W, PD = 30W, and PE = 20W. The total power delivered equals the total power absorbed, confirming that conservation of power is satisfied in the circuit.

PREREQUISITES
  • Understanding of Kirchhoff's Voltage Law (KVL)
  • Familiarity with the power formula P = IV
  • Basic circuit analysis skills
  • Knowledge of electrical components and their functions
NEXT STEPS
  • Study advanced applications of Kirchhoff's Laws in complex circuits
  • Learn about power factor correction techniques in AC circuits
  • Explore the impact of component values on power distribution
  • Investigate energy conservation principles in electrical systems
USEFUL FOR

Electrical engineering students, circuit designers, and anyone involved in circuit analysis and power management will benefit from this discussion.

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Homework Statement



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

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.
 
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Looks right to me.
 

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