| commit | author | age | ||
| 7c2a8f | 1 | #StartUvod |
| SP | 2 | \vskip-2.9mm\noindent |
| 3 | \begin{tabular}{lr} | |
| 4 | \begin{minipage}[t]{0.5\textwidth} | |
| 5 | Na vi"sini $h=/*/h/*/\mathrm{m}$ nad nevtralno prevodno podlago | |
| 6 | se nahajata prema vodnika polmera $r_0=/*/r0/*/$m z nabojem $\pm q=/*/q/*/$C. | |
| 7 | Razdalja med njima je $d=/*/d/*/$m. | |
| 8 | \end{minipage} | |
| 9 | \hskip0.01\textwidth | |
| 10 | \begin{minipage}[t]{0.4\textwidth} | |
| 11 | \vskip-5mm | |
| 12 | \begin{tikzpicture}[scale=0.7] | |
| 13 | \fill[color=black] (0,2) circle (0.2); | |
| 14 | \fill[color=black] (4,2) circle (0.2); | |
| 15 | \node[above] at (0.4,2) {$-q$}; | |
| 16 | \node[above] at (4.4,2) {$+q$}; | |
| 17 | \draw [dashed,stealth-stealth] (-1,0) -- (-1,2); | |
| 18 | \draw [dashed,stealth-stealth] (0,0.5) -- (4,0.5); | |
| 19 | \draw [dotted] (0,0) -- (0,3); | |
| 20 | \draw [dotted] (-1.5,2) -- (5.5,2); | |
| 21 | \draw [dotted] (4,0) -- (4,3); | |
| 22 | \fill[color=black!20] (-3.0,0) -- (8.5,0) -- (8.5,-0.8) -- (-3.0,-0.8); | |
| 23 | \node[left] at (-1,1) {$h=/*/h/*/$m}; | |
| 24 | \node[above] at (2,0.5) {$d=/*/d/*/$m}; | |
| 25 | \end{tikzpicture} | |
| 26 | \end{minipage} | |
| 27 | \end{tabular} | |
| 28 | #EndUvod | |
| 29 | %\node[below] at (4,0) {A}; | |
| 30 | %\node[below] at (8,0) {B}; | |
| 31 | %\fill[color=black] (4,0) circle (0.05); | |
| 32 | %\fill[color=black] (8,0) circle (0.05); | |
| 33 | %\draw [dashed,stealth-stealth] (4,0.5) -- (8,0.5); | |
| 34 | %\node[above] at (6,0.5) {$d=/*/d/*/$m}; | |
| 35 | ||
| 36 | ||
| 37 | #StartPodnaloga | |
| 38 | Izra"cunajte absolutno vrednost napetosti med vodnikoma. | |
| 39 | #EndPodnaloga | |
| 40 | ||
| 41 | #StartRezultat | |
| 42 | TeX: U | |
| ce4fc9 | 43 | izpis: eng 3 |
| 7c2a8f | 44 | enota: V |
| SP | 45 | formula: eps0=8.854e-12;D=sqrt(d^2+4*h^2);U=q*log(2*h*d/(r0*D))/pi/eps0;U |
| 46 | napacna: pi*eps0/log(2*h*d/(r0*D))/q^2 | |
| 47 | napacna: 2.1*U | |
| 48 | napacna: U/2.1 | |
| 49 | #EndRezultat | |
| 50 | eps0=8.854e-12;D=sqrt(d^2+4*h^2);U=q*log(2*h*d/(r0*D))/pi/eps0;U | |
| 51 | pi*eps0/log(2*h*d/(r0*D))/q | |
| 52 | log(2*h*d/(r0*D))/pi/eps0 | |
| 53 | ||
| 54 | ||
| 55 | #StartPodnaloga | |
| 56 | Kolik"sna je kapacitivnost dvovoda na enoto dol"zine? | |
| 57 | #EndPodnaloga | |
| 58 | ||
| 59 | ||
| 60 | ||
| 61 | #StartRezultat | |
| 62 | TeX: c | |
| 63 | izpis: sci 3 | |
| 64 | enota: F/m | |
| 65 | formula: eps0=8.854e-12;D=sqrt(d^2+4*h^2);c=pi*eps0/log(2*h*d/(r0*D));c | |
| 66 | napacna: 2.4869128*c | |
| 67 | napacna: 0.84128*c | |
| 68 | napacna: 0.6838*c | |
| 69 | napacna: 1.376*c | |
| 70 | napacna: 19.14869128*c | |
| 71 | #EndRezultat | |
| 72 | ||
| 73 | ||
| 74 | #StartSkalar | |
| 75 | ime: d | |
| 76 | izpis: sci 1 | |
| 77 | nacin: FixedVals 4 5 6 | |
| 78 | #EndSkalar | |
| 79 | ||
| 80 | #StartSkalar | |
| 81 | ime: h | |
| 82 | izpis: sci 1 | |
| 83 | nacin: FixedVals 1 2 3 | |
| 84 | #EndSkalar | |
| 85 | ||
| 86 | #StartSkalar | |
| 87 | ime: r0 | |
| 839d16 | 88 | izpis: dec 3 |
| 7c2a8f | 89 | nacin: FixedVals 5e-3 6e-3 8e-3 |
| SP | 90 | #EndSkalar |
| 91 | ||
| 92 | ||
| 93 | #StartSkalar | |
| 94 | ime: q | |
| 95 | izpis: sci 1 | |
| 96 | nacin: FixedVals 5e-9 6e-9 7e-9 8e-9 | |
| 97 | #EndSkalar | |
| 98 | ||
