Finding Constant for Ohm's Law: Correlation or OHMs Constant?

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Homework Help Overview

The discussion revolves around understanding the relationship defined by Ohm's Law, specifically in the context of determining a constant from two numerical lists representing potential and current. Participants are exploring whether the constant in question refers to a correlation or Ohm's constant.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants are attempting to clarify the definition of the constant in the context of Ohm's Law and are questioning how to derive it from the provided numerical lists. There are discussions about writing equations and interpreting the relationship between voltage, current, and resistance.

Discussion Status

The conversation is ongoing, with some participants providing guidance on how to approach the problem by suggesting the formulation of equations and the use of graphs to visualize relationships. However, there is no explicit consensus on the definition of the constant or the method to determine it.

Contextual Notes

Participants are working with two columns of numerical data and are trying to understand how to relate these to the symbols in Ohm's Law. There is a focus on answering specific questions to clarify the problem further.

bambilmiller
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1. Write the equation for each run in the form (potential=constant x current)
{the form has two numerical list to work with}

2. How do I find the constant from these 2 lists? Is it the correlation that the question is looking for? or, Is it OHMs constant, that the question is talking about??
 
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Hi bambilmiller and welcome to PF.

If I asked you to state Ohm's Law, what would you say?
 
It is the relationship among voltage, current and resistance. Where the current in a circuit is directly proportional to the voltage established across the circuit and is inversly proportional to the resistance of the circuit. I=V/R
 
Correct. Now can you answer question 1 and write the equation?
For question 2, look at your list. It has two columns of numbers. What are the symbols corresponding to the numbers that you know? Can you find an equation expressing the symbol that you don't know in terms of the symbols that you do know? If so, can you plug in numbers to find the unknown in terms of the known quantities for each line of your list?
 
That still does not answer my question. What is the constant? How do I figure out what it is?
 
bambilmiller said:
That still does not answer my question. What is the constant? How do I figure out what it is?
I told you how to figure it out. If you answer my questions first (there are three of them, please answer them in order), you will be led to the answer of your question.
 
bambilmiller said:
That still does not answer my question. What is the constant? How do I figure out what it is?

You could draw a graph for each table and see if you get a straight line. If so you might be able to see it is the same as y = 5x or y= 10x graph, or similar.
 
Is the correct equation for the first part V=IR ?
 
Solve V=IR for R.
 
  • #10
Thank you everyone for all your help. The light bulb just went off! :)
 
  • #11
Or on ?
 
  • #12
Either way, it's all good!
 

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