Hat is the potential difference between X and 65cm mark in the circuit

Click For Summary

Homework Help Overview

The discussion revolves around determining the potential difference between point X and the 65cm mark in a circuit involving a wire made of high resistivity material. The problem is situated in the context of electrical circuits and resistivity.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants present various calculations for the potential difference, with one suggesting a formula based on the length of the wire and another questioning the interpretation of the wire's length and resistivity.

Discussion Status

There are differing interpretations of the problem, particularly regarding the length of the wire and the application of resistivity. Some participants provide calculations, while others seek clarification on the assumptions made in the problem setup.

Contextual Notes

Participants note the total length of the wire and the specific segment being analyzed, indicating potential confusion about the circuit configuration and the resistivity's impact on the calculations.

looi76
Messages
80
Reaction score
0

Homework Statement


http://img152.imageshack.us/img152/696/1005200802ps4.png
The wire XY in the circuit is made of a material of high resistivity and uniform area of cross-section. What is the potential difference between X and 65cm mark in the circuit?

Homework Equations



The Attempt at a Solution



[tex]\frac{65}{100} \times 2 = 1.3V[/tex]

Is this correct?
 
Last edited by a moderator:
Physics news on Phys.org
i think 2 x 65/165 if not misunderstood, the whole length 165 cm.
 
The length of the wire is 100cm. and on that wire the mark is 65cm. Is my answer correct?
 
If the high-resistivity wire is just between X and Y, then yes it's 1.3 V.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 15 ·
Replies
15
Views
2K
Replies
2
Views
3K
  • · Replies 7 ·
Replies
7
Views
4K
Replies
6
Views
1K
Replies
6
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K