Solve Kirchoff's Laws Homework with Expert Help

  • Thread starter Thread starter fffff
  • Start date Start date
  • Tags Tags
    Laws
Click For Summary

Homework Help Overview

The discussion revolves around applying Kirchhoff's Laws to a circuit problem involving multiple loops and nodes. The original poster expresses confusion about how to approach the problem, particularly in calculating resistance and current.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the need to sum resistances in loops and question how to properly apply Kirchhoff's Laws. There is a focus on understanding the relationships between currents in different branches and the overall circuit setup.

Discussion Status

Some participants are providing guidance on the correct application of Kirchhoff's Laws, emphasizing the importance of considering all elements in a loop and the relationships between currents. There is an ongoing exploration of how to interpret the circuit configuration.

Contextual Notes

The original poster mentions confusion regarding the calculation of resistance and current, indicating a potential misunderstanding of the circuit's structure. There is also a reference to the number of loops and nodes, which may affect the application of the laws.

fffff
Messages
53
Reaction score
0

Homework Statement


http://img87.imageshack.us/img87/5418/kirchoff2nr2.jpg

Now, I dnt have a clue on homework to solve this.
 
Last edited by a moderator:
Physics news on Phys.org
Why? What is confusing you?
 
there are three loops and 2 nodes.

See when considering one loop, do I have to add all the resistance together.
So for loop 1 (1v)

the resistance is 2.5

so current = 1/2.5=0.4 A

but I am getting the wrong answer
 
How did you get 2.5? You must sum the entire loop. The sum of the changes in potential across all the elements in a closed loop must be zero. You only need to consider two loops here, and the one node (which gives you the relation between the three branch currents). The value for I won't be the same in each part of the circuit.
 

Similar threads

There HAS to be a mistake in this question (simple vectors question) please look
  • · Replies 5 ·
Replies
5
Views
2K
How Can I Calculate Daytime? Need Help Understanding the Answer!
  • · Replies 2 ·
Replies
2
Views
1K
Solving Kirchoff's Laws: Are My Answers Correct?
  • · Replies 9 ·
Replies
9
Views
4K
Calculating Average Velocity from Position vs Time Graph
  • · Replies 9 ·
Replies
9
Views
5K
Using the angle of a pendulum to measure the acceleration of a plane.
  • · Replies 1 ·
Replies
1
Views
4K
Finding potential at a point in capacitor
  • · Replies 2 ·
Replies
2
Views
2K
Network Analysis, Kirchhoff's Laws, changing current source to voltage
  • · Replies 4 ·
Replies
4
Views
1K
Equivalent capacitance and Kirchoff's laws
  • · Replies 3 ·
Replies
3
Views
2K
Black Body vs Non-Black Body: What Sets Them Apart in Kirchoff's Law?
  • · Replies 3 ·
Replies
3
Views
2K
Hi, I need some help with a homework problem invovling acceleration
  • · Replies 6 ·
Replies
6
Views
2K