#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. Razdalja med njima je $d=/*/d/*/$m, naelektrena sta z $\pm{q}=\pm/*/q/*/$C/m naboja na dol"zinsko enoto. To"cki A in B sta na meji med ravno podlago in zrakom. \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}; \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}; \end{tikzpicture} \end{minipage} \end{tabular} \vskip-2mm #EndUvod #StartPodnaloga Kolik"sna je absolutna vrednost elektri"cne poljske jakosti v to"cki A? #EndPodnaloga #StartRezultat TeX: E(\mathrm{A}) izpis: dec 8 enota: V/m formula: -0.00124567890 napacna: -1200000 napacna: -0.12 napacna: -12.3 #EndRezultat #StartPodnaloga Kolik"sno je razmerje povr"sinskih gostot naboja v to"ckah A in B? #EndPodnaloga #StartRezultat TeX: \sigma_\mathrm{A}/\sigma_\mathrm{B} izpis: dec 3 enota: formula: ka=d/h;(1+4*ka^2)/3 napacna: (1+ka^2)/3 napacna: (1+4*ka^2) napacna: (1+2*ka^2)/3 #EndRezultat #StartPodnaloga Kolik"sna je kapacitivnost dvovoda na enoto dol"zine? #EndPodnaloga #StartRezultat TeX: c izpis: sci 3 enota: F/m formula: c=3;c napacna: 2.4869128*c napacna: 0.84128*c napacna: 0.6838*c napacna: 1.376*c napacna: 19.14869128*c #EndRezultat #StartSkalar ime: q izpis: sci 2 nacin: FixedVals 40e-9 50e-9 60e-9 #EndSkalar #StartSkalar ime: d izpis: sci 1 nacin: FixedVals 6 8 #EndSkalar #StartSkalar ime: h izpis: sci 1 nacin: FixedVals 1 2 #EndSkalar #StartSkalar ime: r0 izpis: sci 1 nacin: FixedVals 5e-3 6e-3 8e-3 #EndSkalar