$I_1=I_3$ I

$I_{12}=I_3$

$I_{12}+I_3=I_{ }$

$I_{12}=I_3=I$

$U_1=U_2=U_{12}$

$U_1=U_2$

$U_{12}=U_3=U$

$U_{12}+U_3=U$

$H=\frac{U}{\xi}.100\%$

$H=I^2.R.t$

$H=U.I$

$H=I^2.R$

 $I_1=I_2=I_{12}$  

 $I_{12}=I_3$  

 $I_1+I_2=I_{12}$  

 $I_{12}=I_3=I$  

$U_{12}=U_3$

$U_1=U_2=U_{12}$

$U_1+U_2=U_{12}$

$U_{12}=U$

$U=\xi-I$

$U=\xi.I.r$

$U=\xi-I.r$

$U=I.r$

$m=\frac{A.I.t}{F.n}$

$m=\frac{A.F.t}{n.F}$

$m=\ \frac{n.F}{A.I}$

$m=\frac{A.n.F}{I.t}$

$2\Omega$

$1,5\Omega$

$12\Omega$

$18\Omega$

$A=U.I.t$

$A=\xi.I.t$

$A=U.I$

$A=\xi.I$

Ion dương, ion âm

Electron

Ion âm, electron,ion dương

electron và lỗ trống

Electron

ion âm, electron

Ion âm, ion dương, electron

Ion âm, ion dương

Electron

Ion âm, ion dương, electron

Ion âm, ion dương

ion âm, electron