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Hall Voltage Effect

by zigga15
Tags: effect, hall, voltage
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zigga15
#1
Aug24-06, 07:59 PM
P: 9
Hey I am having trouble with the following question.

Because blood contains charged ions moving blood develops a Hall voltage across the diameter of an artery. The blood in a large artery with a diameter of 0.85 cm has a flow speed of 0.6 m/s. If a section of this artery is in a magnetic field of 0.4T, what is the potential diference across the diameter of the artery?

I have an idea of what is going on in the question, but it seems i havn't been given enough information to solve it. I know that hall voltage is given by:

V = (IB)/ned and i know that F = qvB if i assumed the field was perpendicular to the artery I could use that for something - maybe. But really im stumped, any help, or even a formula i have over looked would be great thanks.

~Daniel
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Andrew Mason
#2
Aug24-06, 11:25 PM
Sci Advisor
HW Helper
P: 6,653
Quote Quote by zigga15
Hey I am having trouble with the following question.

Because blood contains charged ions moving blood develops a Hall voltage across the diameter of an artery. The blood in a large artery with a diameter of 0.85 cm has a flow speed of 0.6 m/s. If a section of this artery is in a magnetic field of 0.4T, what is the potential diference across the diameter of the artery?

I have an idea of what is going on in the question, but it seems i havn't been given enough information to solve it. I know that hall voltage is given by:

V = (IB)/ned and i know that F = qvB if i assumed the field was perpendicular to the artery I could use that for something - maybe. But really im stumped, any help, or even a formula i have over looked would be great thanks.

~Daniel
You have to know how many charge carriers flow past a given point per unit time. You don't have enough information to find that.

AM


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