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電子公式。$ i! W' t0 j0 ?. z
I=Q/t3 z0 Q8 }) R: v9 ^- @7 S* |
I:Current(A)
- o' w4 e! O! y7 L6 b) \Q:Charge(c)2 J! U7 S+ k! ^% Y; j. I
t:Time(sec)
. [* Z$ ]1 J' n5 }" _; v, @. ^- e* y, [+ T, Y" d
V=IxR1 l8 B/ S2 z1 s0 b! k
I=Current(A)
# V4 p0 l8 P, C# mR:Resistance(ohm)
! C* {# B4 Q% n% S" \# ]9 P* K( _( q+ i2 s, e. @' B, T
R=pL/A
8 o( s$ h' Y0 h: a! lR:Resistance(ohm)$ M$ Z7 o+ L( h* i% j5 `+ U
p:Resistivity(ohm-m)
- K: n' F' O# G) v) l. QL:Length(m)
" O( e6 o R4 HA:Cross sectional area(m2)1 v& M- r$ O# x' R, u0 W8 W
+ l% G" M% M- l4 r& N, k' g/ IDC
) w: u, J# H/ k. l% c: EP=VxI. E1 p5 Q8 O& ]( b% A4 c5 ~5 l: i
or
! W7 G3 K; D8 e* R% d0 wP=V2xR' l. K' A, m3 i4 L/ L0 T
or: T% ^/ b; R7 S3 x& ~3 g6 }! M
P=I2xR' @' |1 f) e+ U$ m* L5 @7 D
P:Power(W)
' ?$ W" S4 W# z4 ]. A& ?V:Voltage(V)9 c, ^7 @4 L4 e; n) B5 x+ a
I:Current(A)
% w, w% m, u2 O$ @8 ^R:Resistance
: r; f9 v V6 K5 O5 m
$ i* U( d3 V" n5 M9 T, k& d: cAC0 f- q9 r1 A$ z! J+ G
P:Power(W)) Z. I: n3 `1 N- I% R
V:Voltage(V)6 o* w5 K5 {5 |9 R: V' X. z$ k
I:Current(A); L% f9 C/ } ?$ Q7 P( e
0 m b f9 b0 @# \E=(P*t)/1000' V7 s, N- |" o( ?( V. c
E:Power(W)5 K* p8 A8 o+ z0 b
t:time(h/day)1 A* z9 ]: m6 z3 ]2 \* W- V& z. Y: D9 G( r
+ A4 m: e7 |6 w; dC=Q/V
7 W1 _' f" }5 ^, E |% x v7 fC:Capacitance(F)
* K$ l$ _! |9 ~! ?Q:Charge(C). f# ^# n, o/ C
V:Voltage9 r% e0 t) H4 W
1 x* E9 x! q3 ?/ g; \8 BXc=1/(2丌fc)$ K! Z _4 L, F: S7 C! S
Xc:Reactance(ohm), _& ]/ M1 W2 x6 V+ x/ ~
C:Capacitance(F)' I8 K/ T" z, I0 ]% g1 ~4 R
f:Frequency(Hz)
" t0 U8 B! M; P+ j
* M0 X6 R- a& U, E/ M1 B; y/ wXL=2丌fL; V% B$ F. `. a4 ~
XL:Reactance(ohm)
1 ]3 R! W# v- A2 l. Y$ a E, _' [L:Inductance(Hz)( r' O0 N7 f7 z( |2 f( V
f:Frequency(Hz)
- o u+ C" A4 H# y9 p$ L
& Q3 ?# g" R* `" |' X, A, G( q8 L4 r2 d+ l: d
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发表于 2014-12-28 23:05:18