Magnetic Field and Voltage in a Conductive Tape: The Hall Effect

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Homework Help Overview

The discussion revolves around calculating the voltage across a conductive tape placed in a magnetic field, specifically examining the Hall Effect. The original poster presents a scenario involving a copper tape, a magnetic field strength, and a current, while referencing equations related to electromagnetic principles.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants inquire about the original poster's attempts to derive the voltage, emphasizing the need for clarity on the methods used. There is a focus on the relevance and application of the equations presented, as well as the correctness of the values used in calculations.

Discussion Status

The discussion is ongoing, with participants seeking more detailed explanations of the original poster's calculations and the equations used. Some guidance has been offered regarding the relevance of the Hall Effect, indicating a potential direction for further exploration.

Contextual Notes

There is a noted confusion regarding the equations and their application, as well as a lack of clarity on the original poster's understanding of the problem setup. The original poster references a result from a book, which raises questions about the accuracy of their calculations and assumptions.

iverse
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Puting a 150 micro.m tick coper tape into a magnetic fild of 0.65. The current going through the tape = 23 A. What is the voltage on the edges of that tape ?

Homework Equations


I used this equation: U = dBS/dt
and then - > (B*r^2*pi*I)/e_0

The Attempt at a Solution


Resoult should be 7.4 microV
 
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Just showing what the result should be is not enough; please show us what attempts you have made to obtain that result. We can't help you if we can't see what you have tried.
 
PeterDonis said:
Just showing what the result should be is not enough; please show us what attempts you have made to obtain that result. We can't help you if we can't see what you have tried.
What do you mean ? The resoult is not mine is from the book. Its what it should be not what i get. From the equation i put up i get totally difrent stuff i don't even think its the right one. I hope someone can resolve this...
 
PeterDonis said:
Just showing what the result should be is not enough; please show us what attempts you have made to obtain that result. We can't help you if we can't see what you have tried.
Sorry * hmm i didn t even see it said the attempt :P. Its the actual resoult as i said.
 
iverse said:
Its what it should be not what i get.

So what do you get and how do you get it?
 
PeterDonis said:
So what do you get and how do you get it?
I use the equation that i wrote. The resoult is really irelevant cus it must be wrong but here it is.

B= 0.65 r = 0.75 * 10^-6 and I = 23 so -> (0.65 * (0.75*10^-6)^2 * pi * 23) / (1.6 * 10^-19) = 1.65 * 10^8 is what i get
 
Where did your Relevant equations come from, and what is their area of application? The information in your problem statement doesn't seem to pertain to the variables in those equations.

Hint: Look up "The Hall Effect".
 

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