Find the equivalent resistance between two points in terms of R

In summary: This thread will remain closed. Please start a new thread and show your work if you want tutorial help. Thank you.
  • #1
valhakla
8
0
Homework Statement
Find thr equivalent resistance through two point A and B
Relevant Equations
R series = R1 + R2
R parallel = R1*R2/R1+R2
Screenshot 2023-05-31 at 17.59.50.png
 

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  • #3
kuruman said:
According to our rules, to receive help, you need to show some credible effort towards answering the question(s). How about telling us what you do know and how you would approach this problem?

Please read, understand and follow our homework guidelines, especially item 4, here
https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/
I attempted to solve the problem using the formulas I have provided above, but my answers are not matching, also I tried to search for similar problems in the internet but found nothing
 
  • #4
OK, but "I tried and didn't get anywhere" is not sufficient attempt at a solution. Please post what you tried and what you got. We would prefer that you use LaTeX which is to learn. Click the link "LaTeX guide", lower left, to see how to do it.
 
  • #5
New user is reminded that they always need to show their best efforts on schoolwork problems before we can offer tutorial help.
kuruman said:
OK, but "I tried and didn't get anywhere" is not sufficient attempt at a solution. Please post what you tried and what you got. We would prefer that you use LaTeX which is to learn. Click the link "LaTeX guide", lower left, to see how to do it.
Thank you, I will learn how to do it. I am just learning and new here, so would appreciate solution for my problem, the problem seems very unique for me as it's really challenging for me to determine whether the resistors are in parallel or in series, otherwise I wouldn't post it here.
 
  • #6
valhakla said:
Thank you, I will learn how to do it. I am just learning and new here, so would appreciate solution for my problem, the problem seems very unique for me as it's really challenging for me to determine whether the resistors are in parallel or in series, otherwise I wouldn't post it here.
We don't supply solutions, only hints and you must make and show an effort to use them. So here are some.

What are the criteria for resistors being in series?
What are the criteria for resistors being in parallel?
Do you see any resistor combination in this circuit that satisfies these criteria? If so identify them.
 
  • #7
Thread closed for Moderation...
 
  • #8
valhakla said:
so would appreciate solution for my problem,
As has been explained to you several times in this thread so far, we do not give solutions to schoolwork questions. We can provide hints, ask probing questions, find mistakes, etc., but the student must do the bulk of the work on schoolwork questions. Please see the PF Rules link under INFO at the top of the page.

This thread will remain closed. Please start a new thread and show your work if you want tutorial help. Thank you.
 

FAQ: Find the equivalent resistance between two points in terms of R

1. How do you find the equivalent resistance for resistors in series?

To find the equivalent resistance for resistors in series, simply add the resistance values of each resistor together. The formula is: \( R_{eq} = R_1 + R_2 + R_3 + \ldots + R_n \).

2. How do you find the equivalent resistance for resistors in parallel?

To find the equivalent resistance for resistors in parallel, use the formula: \( \frac{1}{R_{eq}} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} + \ldots + \frac{1}{R_n} \). Then, take the reciprocal of the result to get \( R_{eq} \).

3. What is the equivalent resistance between two points if there are both series and parallel resistors?

To find the equivalent resistance in a mixed circuit with both series and parallel resistors, simplify the circuit step by step. First, find the equivalent resistance of any parallel groups, and then add the series resistances. Repeat this process until you have a single equivalent resistance between the two points.

4. How do you handle complex resistor networks?

For complex resistor networks, use techniques such as the Delta-Wye (Δ-Y) transformation, symmetry considerations, or Kirchhoff's laws to simplify the network. These methods help in breaking down the network into simpler series and parallel combinations.

5. Can you use Ohm's Law to find equivalent resistance?

Ohm's Law (\( V = IR \)) itself doesn't directly provide the equivalent resistance, but it can be used in conjunction with the principles of series and parallel resistances. For example, knowing the total voltage and current in a circuit allows you to calculate the equivalent resistance using \( R_{eq} = \frac{V}{I} \).

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