Solving Source Superposition: Step-by-Step Guide

AI Thread Summary
The discussion focuses on understanding source superposition in circuit analysis, specifically how to determine the current contributions from both voltage and current sources. The user seeks a clear, step-by-step explanation for calculating the current due to a current source, as they are already comfortable with the voltage source calculations. Key points include the need to recognize the configuration of resistors—whether they are in series or parallel—and the importance of converting the current source into a voltage source for analysis. The user identifies confusion around current splitting at a junction and the relationship between the resistors. Clarifying these concepts is essential for successfully applying the superposition theorem in circuit problems.
negatifzeo
Messages
66
Reaction score
0

Homework Statement


snbz1.png

This isn't a homework assignment, this is straight from the textbook. They work it out but I'm still not following, would it be possible for someone to go through this step by step and explain
it clearly? (How to determine the current due to the voltage source and due to the current source.) I can get the right answer when it comes to determining the current due to the voltage source but the current source trips me up. Thanks.


Homework Equations





The Attempt at a Solution


 
Physics news on Phys.org
For the current source drawing (b): You have 6 A going into the junction. How is the current split between the two resistors? Note that they share the same voltage. Are they in series or in parallel?
For the voltage source (c): You have two resistors that share the same current. How much current do they draw? Are they in series or in parallel?
 
Thanks. My big problem was not realizing I had to convert the current source into a voltage source by placing the parallel resistor in series.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top