Circuits - Power absorbed / supplied

  • Context: Engineering 
  • Thread starter Thread starter J.live
  • Start date Start date
  • Tags Tags
    Circuits Power
Click For Summary
SUMMARY

The discussion focuses on understanding the concepts of absorbed and supplied power in electrical circuits, specifically involving a voltage source (Vx) and a dependent source (4x). It is established that supplied power occurs when voltage and current have opposite signs, while absorbed power occurs when they have the same sign. The calculations presented indicate that both Vx and the dependent source 4x are supplying power, which is then absorbed by element A. The power equations derived are Vx * 4x = W and 4Vx * 16 = W.

PREREQUISITES
  • Understanding of basic circuit theory
  • Familiarity with dependent sources in electrical circuits
  • Knowledge of power calculations in electrical engineering
  • Ability to interpret circuit diagrams
NEXT STEPS
  • Study the concept of dependent sources in circuit analysis
  • Learn about power calculations in AC and DC circuits
  • Explore the principles of Kirchhoff's laws for circuit analysis
  • Investigate the relationship between voltage, current, and power in electrical components
USEFUL FOR

Electrical engineering students, circuit designers, and anyone seeking to deepen their understanding of power dynamics in electrical circuits.

J.live
Messages
95
Reaction score
0

Homework Statement



I need to solve the circuit. I have trouble comprehending absorbed/supplied power concept.

The Attempt at a Solution



So, if power is being supplied by Vx then the current is passing out of the negative terminal towards the dependent source 4x and the element A?

Vx * 4x= W?

Second senario. The power is supplied by the dependent source 4x so again the current is passing out of negative terminal and being delivered to element A and source Vx?

4Vx * 16= W?

Here is the Circuit:
 

Attachments

  • Screen shot 2010-09-10 at 4.34.58 PM.png
    Screen shot 2010-09-10 at 4.34.58 PM.png
    5.1 KB · Views: 1,204
Last edited:
Physics news on Phys.org
J.live said:

Homework Statement



I need to solve the circuit. I have trouble comprehending absorbed/supplied power concept.


The Attempt at a Solution



So, if power is being supplied by Vx then the current is passing out of the negative terminal towards the dependent source 4x and the element A?

Vx * 4x= W?

Second senario. The power is supplied by the dependent source 4x so again the current is passing out of negative terminal and being delivered to element A and source Vx?

4Vx * 16= W?

Here is the Circuit:

Supplied power means that voltage and current have opposite signs. Absorbed (or dissipated) power means that voltage and current have the same sign.
In your case, both Vx and the dependent source are supplying power, which is absorbed by or dissipated at element A.
 

Similar threads

Engineering Difference between power 'supplied' and 'absorbed' circuits?
  • · Replies 6 ·
Replies
6
Views
35K
Why does amplifier sink power for Vout>0 and sources power for Vout<0?
  • · Replies 1 ·
Replies
1
Views
2K
Engineering Determining if voltage or current is positive or negative with sources
  • · Replies 10 ·
Replies
10
Views
6K
Checking my answer.... finding the power of a current and a voltage source
  • · Replies 6 ·
Replies
6
Views
3K
Engineering Circuit interconnection: power delivered
  • · Replies 2 ·
Replies
2
Views
2K
How to find the current and voltage in a circuit with current sources?
  • · Replies 3 ·
Replies
3
Views
3K
Engineering Solve for R1 and G in circuit with Vs, VCCS, and 2 resistors
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad An attempt to understand the associated variable conventions in circuits
  • · Replies 1 ·
Replies
1
Views
2K
The validity of the interconnection of ideal sources
  • · Replies 16 ·
Replies
16
Views
6K
Calculating the average power supplied by a source
  • · Replies 5 ·
Replies
5
Views
8K