Resistance and Radii Relationship

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Homework Help Overview

The discussion revolves around the relationship between the resistance of two wires and their radii. The original poster states that the resistance of wire A is four times that of wire B and seeks to calculate the ratio of their radii.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants inquire about the original problem statement and the assumptions regarding the wires, such as their length and material. There is a focus on clarifying whether the wires have the same cross-sectional area, which influences the resistance and radius relationship.

Discussion Status

The discussion is ongoing, with participants questioning the assumptions made by the original poster. Some guidance has been offered regarding the implications of having the same cross-sectional area on the ratio of the radii.

Contextual Notes

There is a noted need for more information to solve the problem, particularly regarding the lengths and materials of the wires, as well as the exact wording of the problem statement.

anshuman3105
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The resistance of wire A is four times the resistance of wire B. Calculate the ratio of the radii of the wires
 
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anshuman3105 said:
The resistance of wire A is four times the resistance of wire B. Calculate the ratio of the radii of the wires
Hello anshuman3105. Welcome to PF !

What have you tried?

Where are you stuck?

You need to show some effort towards obtaining a solution -- according to the rules of this Forum.


By the way, you n would need more information to solve this problem.

Please state the problem word for word as it was given to you.

Then give an attempt at a solution.
 
I just don't know... :(
Please help.
 
anshuman3105 said:
I just don't know... :(
Please help.

Please state the problem word for word as it was given to you.

Are the wires the same length?

Are they made of the same material?
 
the wires have the same material and same cross-sectional area
 
anshuman3105 said:
...same cross-sectional area

Are you sure about this?
 
Yaaa...sure..!
 
anshuman3105 said:
Yaaa...sure..!

If they have the same cross-sectional area then they have the same radii and the ratio is fixed at 1:1. Any other information or details would be irrelevant. It therefore seems likely that you have either misinterpreted the question or are not providing the true problem statement for reasons we can only guess at.
 

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