Designing a Lab to Find Constant Slope Using E=Blv Equation

AI Thread Summary
The discussion focuses on designing a lab experiment to produce five data points that yield a constant slope using the equation E=Blv. The user plans to rearrange the equation to E/Bv = l, with B and v as independent variables that will vary in each trial, while E is measured through a device. Questions arise about how to effectively change the values of B and v, as well as how to accurately measure E. Additionally, the user seeks clarification on their research question regarding the length of a rod necessary to produce a constant electromotive force (emf). The conversation highlights the need for clearer communication and understanding of the concepts involved in the experiment.
lking226
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Homework Statement


I need to design a lab that will give me 5 points that produce a constant slope.


Homework Equations


I want to use the equation for emf E=Blv
I would re-arrange it to make E/Bv = l
Where B and v are my constantly increasing data points, E is measured by some sort of device, and l is my constant slope.

The Attempt at a Solution


I know my independent variables would be B and v, I would have different vlues for each of my 5 trials.
What would I use to produce and change the B and v?
What would I use to measure my E?
Also, I need help with my research question. So far I have "How long must a rod be to..." would the rest be ... to produce a constant emf? I know it has something to do with emf.


Please help, I'm completely lost!
 
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lking226 said:

Homework Statement


I need to design a lab that will give me 5 points that produce a constant slope.


Homework Equations


I want to use the equation for emf E=Blv
I would re-arrange it to make E/Bv = l
Where B and v are my constantly increasing data points, E is measured by some sort of device, and l is my constant slope.

The Attempt at a Solution


I know my independent variables would be B and v, I would have different vlues for each of my 5 trials.
What would I use to produce and change the B and v?
What would I use to measure my E?
Also, I need help with my research question. So far I have "How long must a rod be to..." would the rest be ... to produce a constant emf? I know it has something to do with emf.


Please help, I'm completely lost!

Why would a rod produce EMF (electromotive force or electromagnetic field?)?

And in your equation, are

B = magnetic field
V = voltage
E = Electric field

??
 
v is velocity of the rod when it is moved across the magnet.
 
or a solenoid? i know this has something to do with solenoids...
 
What in the world are you trying to ask us? We are not mind readers.

Please take some time, and re-ask your question and request for help.
 
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