- #1
alanthreonus
- 10
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Homework Statement
Ampere's Law states [tex]
\int _C \vec{B} \cdot \vec{dr} = \mu_0 \ I
[/tex] .
By taking C to be a circle with radius r, show that the magnitude B = |B| of the magnetic field at a distance r from the center of the wire is [tex]
B = \frac{\mu_0}{2 \pi} \ \frac{I}{r}
[/tex]
The Attempt at a Solution
I really don't know where to start. I don't know what the components of B are, so I don't know how I'm supposed to compute this integral.
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