Magnetism: Difference between revisions
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\vec{B} (\vec{r}) = \frac{ \mu_0 }{ 4 \pi } \frac{ I_1 d\vec{l}_1 \times | |||
\hat{r}}{ r^2 } | |||
</math> | </math> |
Revision as of 21:30, 28 February 2024
Magnetic Field
A moving charge causes a magetic field, following the right hand rule: Your thumb pointing towards the direction of movement of the positive charge, and your other fingers wrap around to indicate the direction of the magnetic field.
A circulating current forms a magnetic dipole.
Calculate Field
Recall that a moving charge exerts a magnetic force on another moving charge.