#StartUvod
\vskip-2.9mm\noindent
\begin{tabular}{lr}
\begin{minipage}[t]{0.5\textwidth}
Na vi"sini $h=/*/h/*/\mathrm{m}$ nad nevtralno prevodno podlago 
se nahajata prema vodnika polmera $r_0=/*/r0/*/$m z nabojem $\pm q=/*/q/*/$C.
Razdalja med njima je $d=/*/d/*/$m.
\end{minipage}
\hskip0.01\textwidth
\begin{minipage}[t]{0.4\textwidth}
\vskip-5mm
\begin{tikzpicture}[scale=0.7]
\fill[color=black] (0,2) circle (0.2);
\fill[color=black] (4,2) circle (0.2);
\node[above] at (0.4,2) {$-q$};
\node[above] at (4.4,2) {$+q$};
\draw [dashed,stealth-stealth] (-1,0) -- (-1,2);
\draw [dashed,stealth-stealth] (0,0.5) -- (4,0.5);
\draw [dotted] (0,0) -- (0,3);
\draw [dotted] (-1.5,2) -- (5.5,2);
\draw [dotted] (4,0) -- (4,3);
\fill[color=black!20] (-3.0,0) -- (8.5,0) -- (8.5,-0.8) -- (-3.0,-0.8);
\node[left] at (-1,1) {$h=/*/h/*/$m};
\node[above] at (2,0.5) {$d=/*/d/*/$m};
\end{tikzpicture}
\end{minipage}
\end{tabular}
#EndUvod
%\node[below] at (4,0) {A};
%\node[below] at (8,0) {B};
%\fill[color=black] (4,0) circle (0.05);
%\fill[color=black] (8,0) circle (0.05);
%\draw [dashed,stealth-stealth] (4,0.5) -- (8,0.5);
%\node[above] at (6,0.5) {$d=/*/d/*/$m};


#StartPodnaloga
Izra"cunajte absolutno vrednost napetosti med vodnikoma.
#EndPodnaloga

#StartRezultat
TeX:		U
izpis:		eng 3
enota:		V
formula:	eps0=8.854e-12;D=sqrt(d^2+4*h^2);U=q*log(2*h*d/(r0*D))/pi/eps0;U
napacna:	pi*eps0/log(2*h*d/(r0*D))/q^2
napacna:	2.1*U
napacna:	U/2.1 
#EndRezultat
eps0=8.854e-12;D=sqrt(d^2+4*h^2);U=q*log(2*h*d/(r0*D))/pi/eps0;U
pi*eps0/log(2*h*d/(r0*D))/q
log(2*h*d/(r0*D))/pi/eps0


#StartPodnaloga
Kolik"sna je kapacitivnost dvovoda na enoto dol"zine?
#EndPodnaloga



#StartRezultat
TeX:		c
izpis:		sci 3
enota:		F/m
formula:	eps0=8.854e-12;D=sqrt(d^2+4*h^2);c=pi*eps0/log(2*h*d/(r0*D));c
napacna:	2.4869128*c
napacna:	0.84128*c
napacna:	0.6838*c
napacna:	1.376*c
napacna:	19.14869128*c
#EndRezultat


#StartSkalar
ime:	d
izpis:	sci 1
nacin:	FixedVals 4 5 6
#EndSkalar

#StartSkalar
ime:	h
izpis:	sci 1
nacin:	FixedVals 1 2 3
#EndSkalar

#StartSkalar
ime:	r0
izpis:	dec 3
nacin:	FixedVals 5e-3 6e-3 8e-3
#EndSkalar


#StartSkalar
ime:	q
izpis:	sci 1
nacin:	FixedVals 5e-9 6e-9 7e-9 8e-9
#EndSkalar