v 2.27

E_{⊥} (r, t) = \frac{1}{4 π ε_{0}} \frac{q a (t - \frac{r}{c}) \sin θ}{c^{2} r}

${E_\perp (r,t) = \frac {1}{4 \pi \varepsilon_0} \frac{q a(t - \frac{r}{c}) \sin \theta}{c^2 r}}$

Error