Magnetic Field Of Wire

#Physics

$\displaystyle B_{\text{wire}}=\frac{{\mu}_{0}I}{2\pi r}$

• The magnitude of the magnetic field $\displaystyle B_{\text{wire}}$ of an infinitely long straight wire carrying current $\displaystyle I$ measured a distance $\displaystyle r$ from the wire
• $\displaystyle {\mu}_{0}$ is the magnetic constant
• For an infinite wire
• The direction is determined by the right hand rule

$\displaystyle B_{\text{wire}}=\frac{{\mu}{0}I{\text{enc}}}{4\pi s}(\sin {\theta}{2}-\sin {\theta}{1})\hat{\phi}$

• $\displaystyle {\theta}_{2}$ is the angle subtended between the point of observation and the end of wire that is higher in $\displaystyle z$