Checking Magnetic Flux Calculations: BA cos(delta) = 0.512 Weber & NBA = 9 Weber

In summary, the conversation involves a discussion about two questions related to using BA cos(delta) and NBA in finding the answer to a homework problem. The first question resulted in an answer of 0.512 Weber, while the second question resulted in an answer of 9 Weber. The person speaking would like to know if their answers are correct. Another person suggests considering the use of sin instead of cos in the first question and provides a method for determining which function to use.
  • #1
zack7
55
0

Homework Statement



The first question I used BA cos(delta)
My answer was 0.512 Weber

The second question I used NBA
My answer was 9 Weber

I would like to know whether my answers are right thank you

[PLAIN]http://img263.imageshack.us/img263/751/doentx.jpg[/CENTER]​
 
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  • #2
zack7 said:

Homework Statement



The first question I used BA cos(delta)
My answer was 0.512 Weber

The second question I used NBA
My answer was 9 Weber

I would like to know whether my answers are right thank you

[PLAIN]http://img263.imageshack.us/img263/751/doentx.jpg[/CENTER][/QUOTE]

Second answer looks good.

Question about the first - was cos the correct function or should you use sin??

To test, you could consider if the question had used 90 degrees as the angle.
Would there be any flux through the area.
cos 90 = 0 ; sin 90 =1. would you want a zero answer [use cos] or a numerical answer [use sin] That's how I decide. Since the angle can be defined different ways [like those problems inclined to the vertical or inclined to the horizontal] it is not a good idea to decide on a function and try to use it in every problem.​
 
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1. What is magnetic flux?

Magnetic flux is a measure of the strength of a magnetic field passing through a given area.

2. How is magnetic flux calculated?

Magnetic flux is calculated by taking the dot product of the magnetic field and the area vector.

3. What is the unit of measurement for magnetic flux?

The unit of measurement for magnetic flux is weber (Wb) in the SI system.

4. Can magnetic flux be changed?

Yes, magnetic flux can be changed by changing the strength or direction of the magnetic field or by changing the area through which the field passes.

5. What is the difference between magnetic flux and magnetic flux density?

Magnetic flux density is a measure of the strength of the magnetic field at a specific point, while magnetic flux is a measure of the overall strength of the magnetic field passing through a given area.

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