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Adventure123

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## Homework Statement

1)

What is the flux density at point p in Fig "see link below". due only to the 3-A current in the portion of wire 2 shown?

1) 1.64 x 10^-5 Wb/m^2

2) 2.45 x 10^-5 Wb/m^2

3) 3.11 x 10^-5 Wb/m^2

4) 3.65 x 10^-5 Wb/m^2

2)

In which direction does the flux at point p of Question 1 point

1) Out of the page.

2) To the left of the page.

3) To the right of the page.

4) Into the page.

Fig Link

sellmontana.com/math/math.jpg

ignore the red marks.

Answers 2 and 2.. Is this correct?

Thanks

## Homework Equations

B=I x 10^-7 (Integral sign) sinΘ/r^2 dl

## The Attempt at a Solution

B= I x 10-7 (Integral sign) sin Θ /r^2 rdΘ/sin0

B= I x 10^-7/0.0200 (Integral sign) sinΘ dΘ

B=.5 x 10^-7 [-(-2)-(-5)] = ??

Does anyone have a real good document on how to Find flux density at a point? My current book does not fully explain it. Is there a online calculator that would help?

Thanks.