??? ???-??? ??? ??? ????? ? ??????????? , ????? ?? ? ??? ?????? ????? ?????? ?????? ?? ???? ????? ????? ?? ? ??? . ?????? ?? ??? ?????? ? ??? ????? ? ???????????? . ???? ???? ?? ??? ?? ?'??-????? ??? ? ????? ??? .

???? ?????? ?????:

$${\displaystyle d{\vec {B}}={\frac {\mu _{0}}{4\pi }}{\frac {\ \ q{\vec {v}}\times {\hat {r}}}{r^{2}}}={\frac {\mu _{0}}{4\pi }}{\frac {I{\vec {dl}}\times {\hat {r}}}{r^{2}}}={\frac {\mu _{0}}{4\pi }}{\frac {I{\vec {dl}}\times {\vec {r}}}{r^{3}}}}$$

${\displaystyle {\frac {\mu _{0}}{4\pi }}}$ ??? ????? ?????? ?????? SI (?????? ? ???? ????? ?????? ????? ?? ???? ?????? ), ????? ^[1] ??? ${\displaystyle \ 10^{-7}N/A^{2}}$. ??-??? ????? ?????? ?????? cgs ?? ??????? ?- ${\displaystyle {\frac {1}{c}}}$, ???? c ??? ?????? ???? ? ??? ;

${\displaystyle q}$ ??? ???? ????? ????? ?? ????;

${\displaystyle v}$ ??? ?????? ?????;

${\displaystyle I}$ ??? ? ??? ?????? ;

${\displaystyle dl}$ ??? ????? ???? ?????????? ????? ????;

${\displaystyle {\hat {r}}}$ ??? ????? ????? , ????? ?? ?????? ??????? ?? ????? ?? ??? ???? ????? ?? ???? ?????? ??? ???? ????;

${\displaystyle r}$ ??? ????? ??? ????? ?? ??? ???? ????? ?? ???? ?????? ??? ???? ????.

?????? ????? ??? ????? ???? ?????????? ?? ???? ??????, ????? ???? ??? ???. ??-??? ????? ?? ???? ?????? ????? ?? ??? ??????? ?? ?????? ?? ??? ?? ???, ?? ???? ????????? ?? ??????:

${\displaystyle {\vec {B}}={\frac {\mu _{0}I}{4\pi }}\int {\frac {d{\vec {l}}\times {\hat {r}}}{r^{2}}}}$

??? ???-??? ?????????????? [ ????? ??? ???? | ????? ]

??? ???-??? ???? ?? ???????? ?? ?????? ??????? ????? ??????? ????? ? ????????????? (???? ?? ??? ???? ?????? ????????????; ????, ???????? ??????? ????, ??????? ?????? ?????? ?????? ???? ??????).

??????? ??????? ?????? ?????, ?????? ??? ??????? ?? ???? ??????? ???:

${\displaystyle v={\frac {\Gamma }{4\pi d}}}$

????:

Γ ??? ????? ????????

d ??? ????? ????? ??? ?????? ??? ????????.

??? ???? ??? ?? ?????? ?????? ??????? ????? ????:

${\displaystyle v={\frac {\Gamma }{8\pi d}}[cos(A)-cos(B)]}$

???? A ?- B ?? ?????? (??????? ?? ???????) ??? ?? ???????? ???? ???? ???????.

??? ?? [ ????? ??? ???? | ????? ]

• ??? ????
• ?'??-????? ???
• ????? ???
• ???????

??????? ???????? [ ????? ??? ???? | ????? ]

???? ?????? ????? ??? ???-??? ? ??????????

• ???? ?????? ??? ??? ?????? ?????? ????? (???? ????? ?????? ??????? ?????? ).
• ????? ????? ??? ???? (???? ????? ?????? ??????? ?????? ).
• ??? ???-??? , ???? ??????????? ???????? (???????)

????? ?????? [ ????? ??? ???? | ????? ]