Is 66° Below the Horizontal? Solve the Equation

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Homework Help Overview

The discussion revolves around the interpretation of an angle given as 66 degrees below the horizontal in the context of calculating magnetic flux. Participants are trying to clarify how this angle should be applied in their equations related to magnetic fields.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning how to incorporate the angle of 66 degrees below the horizontal into their calculations, particularly in relation to the magnetic flux equation. There is also discussion about the definitions of the variables involved, such as A and B.

Discussion Status

Some participants have provided insights into the relationship between the angle and the normal to the surface, suggesting that the angle used in calculations may differ from the one initially presented. There is an ongoing exploration of how to correctly interpret the angle in relation to the problem at hand.

Contextual Notes

Participants express uncertainty about the implications of the angle being below the horizontal and how it affects the calculations for magnetic flux. There is a specific mention of the Earth's magnetic field's magnitude and direction, as well as the setup involving a wedding ring held in a horizontal plane.

cerium
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Homework Statement



if a questions states that the angle of 66 degrees is below the horizontal is that the angle I put into the equation

Homework Equations





The Attempt at a Solution

 
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Hi cerium! :smile:
cerium said:
if a questions states that the angle of 66 degrees is below the horizontal is that the angle I put into the equation

erm :redface: … what equation? :wink:
 
Sorry missed out the most important part
ABcos(theata) can't find symbol for that.
the question asked you to find magnetic flux I have worked out A and B but I am unsure what it means when it says : the angle is 66 degrees below the horizontal:
Thanks
 
Hi cerium! :smile:

(have a theta: θ and a degree: º :wink:)

(i still don't understand what this is about :redface:)

I assume that θ is the angle between A and B,

so what are A and B?
 
The Earth's magnetic field at a certian location in the uk has a magnitude of 48x10-6T and is directed at 66 degrees below the horizontal.
Determine the magnitude of flux of the Earth's magnetic field through a wedding ring of diameter 2.2cm when the ring is held in the horizontal plane.
What is the magnitude of flux change when the ring is flipped through 180 degrees.

It the angle that is bothering me
Thanks
 
ah!

so B is 66º below the horizontal.

ok, the flux through a surface (or through its boundary) is greatest when the surface is perpendicular to the field, ie when the normal to the surface is parallel to the field.

So θ is the angle between B and the normal to the ring. :wink:
 
I see so I would be using cos24 not cos66
 
Yes. :smile:
 

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