(1.24) , :
́ , . ; , . [1].
() , .
, .
{\displaystyle C={\frac {Q}{\varphi }},}
{\displaystyle Q} , {\displaystyle \varphi } .
( ) . , ( ) R ( ):
{\displaystyle C=4\pi \varepsilon _{0}\varepsilon _{r}R,}
ε0 , 8,85410−12 /, εr .
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, , , , . ( ) ( ) , , . :
{\displaystyle C=\varepsilon _{0}\varepsilon _{r}{\frac {S}{d}},}
S (, ), d , εr .
́ ́ , , , [1]; [2].
/ ( , ) ( ).
, .
{\displaystyle \mathbf {B} } ( )[3]. {\displaystyle \mathbf {B} =\mathbf {B} (x,y,z)} , . (, , ).
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( , ) .
( ) {\displaystyle \mathbf {B},} {\displaystyle \mathbf {H} }, , [4]; {\displaystyle \mathbf {H} } [5], , . , {\displaystyle \mathbf {B}.}
[6], , .
( ) .
, , , .
(I), , (B) .
(, ), (, ) .
, . [ 20718 75] EN cylindrical inductance coil FR bobine
, . [ 20718 75] EN cylindrical cored coil FR bobine cylindrique á noyau
11. . Cylindrical inductance coil F. Bobine cylindrique : 20718 75: . - -
9. . Cylindrical cored coil F. Bobine cylindrique à noyau : 20718 75: . - -
, . ; . . . . . , ,
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; . ,
[.., .. , ... , , 1999 .] , EN toroidal coil
toroidinė ritė statusas T sritis automatika atitikmenys: angl. toroidal coil vok. Ringspule, f; Toroidspule, f rus. , f pranc. bobine toroïdale, f Automatikos terminų žodynas
toroidinė ritė statusas T sritis fizika atitikmenys: angl. doughnut coil; toroidal coil vok. Toroidspule, f rus. , f pranc. bobine torique, f; bobine toroïdale, f Fizikos terminų žodynas
, . ; . . . . . , ,
, , .
, , (. 3.1). , .
.
,
.
, , . , , , .
, , ():
[] =1/1 2= 1 .
μa , , :
μ0= 4π*10-7(*)/ , .
* (*) () , [μ0]=/.
μr, . , , , , , .
μr . μr , , (102-105).
, , .
( ) .
:
[] =1 / 1
.
.
.
3.2
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, S.
S
n S :
=nS=BS cos β
( 3.3, ) Hℓ ℓ:
, , Um , Δℓ. Δℓ , .
́ ́ . 1820 . , , , , . , , . {\displaystyle d{\vec {F}}}, {\displaystyle dV} {\displaystyle {\vec {j}}}, {\displaystyle {\vec {B}}}, () :
{\displaystyle d{\vec {F}}={\vec {j}}\times {\vec {B}}dV}.
, {\displaystyle {\vec {j}}dV=Id{\vec {l}}}, {\displaystyle d{\vec {l}}} , {\displaystyle dl} . :
, , , , .
, , , , , .
().
. ().
, () . , {\displaystyle \mathbf {v} } {\displaystyle q\ } , [1], , {\displaystyle \mathbf {E} } {\displaystyle \mathbf {B} } . () :
{\displaystyle \mathbf {F} =q\left(\mathbf {E} +[\mathbf {v} \times \mathbf {B} ]\right)}
, 1892 . . [2].
.
, , . , [3
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