Различия

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--- electrodynamics:res3.2 [2019/11/01 19:02] – root
+++ electrodynamics:res3.2 [2019/11/01 19:04] (текущий) – root
@@ Строка 20: / Строка 20: @@
 А теперь плотность частиц:
 \[
-n = \frac{{j_0 }}{{qv}} = \frac{{n_0 v_0 }}{v}
+n = \frac{{j_0 }}{{qv}} = \frac{{n_0 v_0 }}{v}=
+\frac{{n_0 v_0 }}{\sqrt {v_0^2  + \frac{{2qEl}}{m}}}.
 \]
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- $
-\vec j = \vec j_0 ,$ $v = \sqrt {v_0^2  + 2qE\ell /m}$, $ n = j_0
-/\left( {qv} \right).$