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<ol style="list-style-type: lower-alpha;">
<li>\( R_{A B}=\frac{ \displaystyle R_{1} \cdot\left(R_{2}+R_{4}\right)+R_{3} \cdot\left(R_{1}+R_{2}+R_{4}\right)}{\displaystyle R_{1}+R_{2}+R_{4}} \)</li>
<li>\( R_{A B}=\frac{ \displaystyle R_{1} \cdot R_{4} \cdot\left(R_{2}+R_{3}\right)+R_{2} \cdot R_{3} \cdot R_{4}}{\displaystyle R_{4} \cdot\left(R_{2}+R_{3}\right)+R_{1} \cdot\left(R_{2}+R_{3}\right)+R_{2} \cdot R_{3}} \)</li>
</ol>

<p>a) offenen Klemmen (C) \( -(\mathrm{D}) \)</p>


<p>a) offenen Klemmen (C) <mjx-container class="MathJax" jax="SVG"><svg alt=" -(\mathrm{D}) " style="vertical-align: -0.566ex" xmlns="http://www.w3.org/2000/svg" width="5.249ex" height="2.262ex" role="img" focusable="false" viewBox="0 -750 2320 1000" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1192-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-1192-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-1192-TEX-N-44" d="M130 622Q123 629 119 631T103 634T60 637H27V683H228Q399 682 419 682T461 676Q504 667 546 641T626 573T685 470T708 336Q708 210 634 116T442 3Q429 1 228 0H27V46H60Q102 47 111 49T130 61V622ZM593 338Q593 439 571 501T493 602Q439 637 355 637H322H294Q238 637 234 628Q231 624 231 344Q231 62 232 59Q233 49 248 48T339 46H350Q456 46 515 95Q561 133 577 191T593 338Z"></path><path id="MJX-1192-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1192-TEX-N-2212"></use></g><g data-mml-node="mo" transform="translate(778, 0)"><use xlink:href="#MJX-1192-TEX-N-28"></use></g><g data-mml-node="TeXAtom" data-mjx-texclass="ORD" transform="translate(1167, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1192-TEX-N-44"></use></g></g><g data-mml-node="mo" transform="translate(1931, 0)"><use xlink:href="#MJX-1192-TEX-N-29"></use></g></g></g></svg></mjx-container></p>


<p>Bei offenen Klemmen (C) \( - \) (D) ergibt sich das Ersatzschaltbild.</p>


<p>Bei offenen Klemmen (C) <mjx-container class="MathJax" jax="SVG"><svg alt=" - " style="vertical-align: -0.186ex" xmlns="http://www.w3.org/2000/svg" width="1.76ex" height="1.505ex" role="img" focusable="false" viewBox="0 -583 778 665" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1193-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1193-TEX-N-2212"></use></g></g></g></svg></mjx-container> (D) ergibt sich das Ersatzschaltbild.</p>


<p>Durch die offenen Klemmen (C) \( - \) (D) liegen die Widerstände \( R_{4} \) und \( R_{2} \) in Reihe zueinander und parallel zum Widerstand \( R_{1} . \)</p>


<p>Durch die offenen Klemmen (C) <mjx-container class="MathJax" jax="SVG"><svg alt=" - " style="vertical-align: -0.186ex" xmlns="http://www.w3.org/2000/svg" width="1.76ex" height="1.505ex" role="img" focusable="false" viewBox="0 -583 778 665" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1194-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1194-TEX-N-2212"></use></g></g></g></svg></mjx-container> (D) liegen die Widerstände <mjx-container class="MathJax" jax="SVG"><svg alt=" R_{4} " style="vertical-align: -0.339ex" xmlns="http://www.w3.org/2000/svg" width="2.63ex" height="1.885ex" role="img" focusable="false" viewBox="0 -683 1162.6 833" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1195-TEX-I-1D445" d="M230 637Q203 637 198 638T193 649Q193 676 204 682Q206 683 378 683Q550 682 564 680Q620 672 658 652T712 606T733 563T739 529Q739 484 710 445T643 385T576 351T538 338L545 333Q612 295 612 223Q612 212 607 162T602 80V71Q602 53 603 43T614 25T640 16Q668 16 686 38T712 85Q717 99 720 102T735 105Q755 105 755 93Q755 75 731 36Q693 -21 641 -21H632Q571 -21 531 4T487 82Q487 109 502 166T517 239Q517 290 474 313Q459 320 449 321T378 323H309L277 193Q244 61 244 59Q244 55 245 54T252 50T269 48T302 46H333Q339 38 339 37T336 19Q332 6 326 0H311Q275 2 180 2Q146 2 117 2T71 2T50 1Q33 1 33 10Q33 12 36 24Q41 43 46 45Q50 46 61 46H67Q94 46 127 49Q141 52 146 61Q149 65 218 339T287 628Q287 635 230 637ZM630 554Q630 586 609 608T523 636Q521 636 500 636T462 637H440Q393 637 386 627Q385 624 352 494T319 361Q319 360 388 360Q466 361 492 367Q556 377 592 426Q608 449 619 486T630 554Z"></path><path id="MJX-1195-TEX-N-34" d="M462 0Q444 3 333 3Q217 3 199 0H190V46H221Q241 46 248 46T265 48T279 53T286 61Q287 63 287 115V165H28V211L179 442Q332 674 334 675Q336 677 355 677H373L379 671V211H471V165H379V114Q379 73 379 66T385 54Q393 47 442 46H471V0H462ZM293 211V545L74 212L183 211H293Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1195-TEX-I-1D445"></use></g><g data-mml-node="TeXAtom" transform="translate(759, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1195-TEX-N-34"></use></g></g></g></g></g></svg></mjx-container> und <mjx-container class="MathJax" jax="SVG"><svg alt=" R_{2} " style="vertical-align: -0.339ex" xmlns="http://www.w3.org/2000/svg" width="2.63ex" height="1.885ex" role="img" focusable="false" viewBox="0 -683 1162.6 833" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1196-TEX-I-1D445" d="M230 637Q203 637 198 638T193 649Q193 676 204 682Q206 683 378 683Q550 682 564 680Q620 672 658 652T712 606T733 563T739 529Q739 484 710 445T643 385T576 351T538 338L545 333Q612 295 612 223Q612 212 607 162T602 80V71Q602 53 603 43T614 25T640 16Q668 16 686 38T712 85Q717 99 720 102T735 105Q755 105 755 93Q755 75 731 36Q693 -21 641 -21H632Q571 -21 531 4T487 82Q487 109 502 166T517 239Q517 290 474 313Q459 320 449 321T378 323H309L277 193Q244 61 244 59Q244 55 245 54T252 50T269 48T302 46H333Q339 38 339 37T336 19Q332 6 326 0H311Q275 2 180 2Q146 2 117 2T71 2T50 1Q33 1 33 10Q33 12 36 24Q41 43 46 45Q50 46 61 46H67Q94 46 127 49Q141 52 146 61Q149 65 218 339T287 628Q287 635 230 637ZM630 554Q630 586 609 608T523 636Q521 636 500 636T462 637H440Q393 637 386 627Q385 624 352 494T319 361Q319 360 388 360Q466 361 492 367Q556 377 592 426Q608 449 619 486T630 554Z"></path><path id="MJX-1196-TEX-N-32" d="M109 429Q82 429 66 447T50 491Q50 562 103 614T235 666Q326 666 387 610T449 465Q449 422 429 383T381 315T301 241Q265 210 201 149L142 93L218 92Q375 92 385 97Q392 99 409 186V189H449V186Q448 183 436 95T421 3V0H50V19V31Q50 38 56 46T86 81Q115 113 136 137Q145 147 170 174T204 211T233 244T261 278T284 308T305 340T320 369T333 401T340 431T343 464Q343 527 309 573T212 619Q179 619 154 602T119 569T109 550Q109 549 114 549Q132 549 151 535T170 489Q170 464 154 447T109 429Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1196-TEX-I-1D445"></use></g><g data-mml-node="TeXAtom" transform="translate(759, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1196-TEX-N-32"></use></g></g></g></g></g></svg></mjx-container> in Reihe zueinander und parallel zum Widerstand <mjx-container class="MathJax" jax="SVG"><svg alt=" R_{1} . " style="vertical-align: -0.339ex" xmlns="http://www.w3.org/2000/svg" width="3.259ex" height="1.885ex" role="img" focusable="false" viewBox="0 -683 1440.6 833" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1197-TEX-I-1D445" d="M230 637Q203 637 198 638T193 649Q193 676 204 682Q206 683 378 683Q550 682 564 680Q620 672 658 652T712 606T733 563T739 529Q739 484 710 445T643 385T576 351T538 338L545 333Q612 295 612 223Q612 212 607 162T602 80V71Q602 53 603 43T614 25T640 16Q668 16 686 38T712 85Q717 99 720 102T735 105Q755 105 755 93Q755 75 731 36Q693 -21 641 -21H632Q571 -21 531 4T487 82Q487 109 502 166T517 239Q517 290 474 313Q459 320 449 321T378 323H309L277 193Q244 61 244 59Q244 55 245 54T252 50T269 48T302 46H333Q339 38 339 37T336 19Q332 6 326 0H311Q275 2 180 2Q146 2 117 2T71 2T50 1Q33 1 33 10Q33 12 36 24Q41 43 46 45Q50 46 61 46H67Q94 46 127 49Q141 52 146 61Q149 65 218 339T287 628Q287 635 230 637ZM630 554Q630 586 609 608T523 636Q521 636 500 636T462 637H440Q393 637 386 627Q385 624 352 494T319 361Q319 360 388 360Q466 361 492 367Q556 377 592 426Q608 449 619 486T630 554Z"></path><path id="MJX-1197-TEX-N-31" d="M213 578L200 573Q186 568 160 563T102 556H83V602H102Q149 604 189 617T245 641T273 663Q275 666 285 666Q294 666 302 660V361L303 61Q310 54 315 52T339 48T401 46H427V0H416Q395 3 257 3Q121 3 100 0H88V46H114Q136 46 152 46T177 47T193 50T201 52T207 57T213 61V578Z"></path><path id="MJX-1197-TEX-N-2E" d="M78 60Q78 84 95 102T138 120Q162 120 180 104T199 61Q199 36 182 18T139 0T96 17T78 60Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1197-TEX-I-1D445"></use></g><g data-mml-node="TeXAtom" transform="translate(759, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1197-TEX-N-31"></use></g></g></g><g data-mml-node="mo" transform="translate(1162.6, 0)"><use xlink:href="#MJX-1197-TEX-N-2E"></use></g></g></g></svg></mjx-container></p>


<p>Der Ersatzwiderstand berechnet sich zu</p>


<p>\begin{aligned}</p>
<p>\[ R_{A B}&amp;=\left(R_{1} \|\left(R_{2}+R_{4}\right)\right)+R_{3}=\frac{R_{1} \cdot\left(R_{2}+R_{4}\right)}{R_{1}+R_{2}+R_{4}}+R_{3}\\&amp;=\frac{R_{1} \cdot\left(R_{2}+R_{4}\right)+R_{3} \cdot\left(R_{1}+R_{2}+R_{4}\right)}{R_{1}+R_{2}+R_{4}} \]</p>
<p>\end{aligned}</p>


<p>b) kurzgeschlossenen Klemmen (C) \( - \) (D)</p>


<p>b) kurzgeschlossenen Klemmen (C) <mjx-container class="MathJax" jax="SVG"><svg alt=" - " style="vertical-align: -0.186ex" xmlns="http://www.w3.org/2000/svg" width="1.76ex" height="1.505ex" role="img" focusable="false" viewBox="0 -583 778 665" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1199-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1199-TEX-N-2212"></use></g></g></g></svg></mjx-container> (D)</p>


<p>Bei kurzgeschlossenen Klemmen (C) \( - \) (D) liegt der Widerstand \( R_{2} \) parallel zum Widerstand \( R_{3} \).</p>


<p>Bei kurzgeschlossenen Klemmen (C) <mjx-container class="MathJax" jax="SVG"><svg alt=" - " style="vertical-align: -0.186ex" xmlns="http://www.w3.org/2000/svg" width="1.76ex" height="1.505ex" role="img" focusable="false" viewBox="0 -583 778 665" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1200-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1200-TEX-N-2212"></use></g></g></g></svg></mjx-container> (D) liegt der Widerstand <mjx-container class="MathJax" jax="SVG"><svg alt=" R_{2} " style="vertical-align: -0.339ex" xmlns="http://www.w3.org/2000/svg" width="2.63ex" height="1.885ex" role="img" focusable="false" viewBox="0 -683 1162.6 833" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1201-TEX-I-1D445" d="M230 637Q203 637 198 638T193 649Q193 676 204 682Q206 683 378 683Q550 682 564 680Q620 672 658 652T712 606T733 563T739 529Q739 484 710 445T643 385T576 351T538 338L545 333Q612 295 612 223Q612 212 607 162T602 80V71Q602 53 603 43T614 25T640 16Q668 16 686 38T712 85Q717 99 720 102T735 105Q755 105 755 93Q755 75 731 36Q693 -21 641 -21H632Q571 -21 531 4T487 82Q487 109 502 166T517 239Q517 290 474 313Q459 320 449 321T378 323H309L277 193Q244 61 244 59Q244 55 245 54T252 50T269 48T302 46H333Q339 38 339 37T336 19Q332 6 326 0H311Q275 2 180 2Q146 2 117 2T71 2T50 1Q33 1 33 10Q33 12 36 24Q41 43 46 45Q50 46 61 46H67Q94 46 127 49Q141 52 146 61Q149 65 218 339T287 628Q287 635 230 637ZM630 554Q630 586 609 608T523 636Q521 636 500 636T462 637H440Q393 637 386 627Q385 624 352 494T319 361Q319 360 388 360Q466 361 492 367Q556 377 592 426Q608 449 619 486T630 554Z"></path><path id="MJX-1201-TEX-N-32" d="M109 429Q82 429 66 447T50 491Q50 562 103 614T235 666Q326 666 387 610T449 465Q449 422 429 383T381 315T301 241Q265 210 201 149L142 93L218 92Q375 92 385 97Q392 99 409 186V189H449V186Q448 183 436 95T421 3V0H50V19V31Q50 38 56 46T86 81Q115 113 136 137Q145 147 170 174T204 211T233 244T261 278T284 308T305 340T320 369T333 401T340 431T343 464Q343 527 309 573T212 619Q179 619 154 602T119 569T109 550Q109 549 114 549Q132 549 151 535T170 489Q170 464 154 447T109 429Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1201-TEX-I-1D445"></use></g><g data-mml-node="TeXAtom" transform="translate(759, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1201-TEX-N-32"></use></g></g></g></g></g></svg></mjx-container> parallel zum Widerstand <mjx-container class="MathJax" jax="SVG"><svg alt=" R_{3} " style="vertical-align: -0.375ex" xmlns="http://www.w3.org/2000/svg" width="2.63ex" height="1.92ex" role="img" focusable="false" viewBox="0 -683 1162.6 848.6" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1202-TEX-I-1D445" d="M230 637Q203 637 198 638T193 649Q193 676 204 682Q206 683 378 683Q550 682 564 680Q620 672 658 652T712 606T733 563T739 529Q739 484 710 445T643 385T576 351T538 338L545 333Q612 295 612 223Q612 212 607 162T602 80V71Q602 53 603 43T614 25T640 16Q668 16 686 38T712 85Q717 99 720 102T735 105Q755 105 755 93Q755 75 731 36Q693 -21 641 -21H632Q571 -21 531 4T487 82Q487 109 502 166T517 239Q517 290 474 313Q459 320 449 321T378 323H309L277 193Q244 61 244 59Q244 55 245 54T252 50T269 48T302 46H333Q339 38 339 37T336 19Q332 6 326 0H311Q275 2 180 2Q146 2 117 2T71 2T50 1Q33 1 33 10Q33 12 36 24Q41 43 46 45Q50 46 61 46H67Q94 46 127 49Q141 52 146 61Q149 65 218 339T287 628Q287 635 230 637ZM630 554Q630 586 609 608T523 636Q521 636 500 636T462 637H440Q393 637 386 627Q385 624 352 494T319 361Q319 360 388 360Q466 361 492 367Q556 377 592 426Q608 449 619 486T630 554Z"></path><path id="MJX-1202-TEX-N-33" d="M127 463Q100 463 85 480T69 524Q69 579 117 622T233 665Q268 665 277 664Q351 652 390 611T430 522Q430 470 396 421T302 350L299 348Q299 347 308 345T337 336T375 315Q457 262 457 175Q457 96 395 37T238 -22Q158 -22 100 21T42 130Q42 158 60 175T105 193Q133 193 151 175T169 130Q169 119 166 110T159 94T148 82T136 74T126 70T118 67L114 66Q165 21 238 21Q293 21 321 74Q338 107 338 175V195Q338 290 274 322Q259 328 213 329L171 330L168 332Q166 335 166 348Q166 366 174 366Q202 366 232 371Q266 376 294 413T322 525V533Q322 590 287 612Q265 626 240 626Q208 626 181 615T143 592T132 580H135Q138 579 143 578T153 573T165 566T175 555T183 540T186 520Q186 498 172 481T127 463Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1202-TEX-I-1D445"></use></g><g data-mml-node="TeXAtom" transform="translate(759, -150) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mn"><use xlink:href="#MJX-1202-TEX-N-33"></use></g></g></g></g></g></svg></mjx-container>.</p>


<p>Daraus ergibt sich folgendes Ersatzschaltbild.</p>


<p>Für den Ersatzwiderstand \( R_{A B} \) gilt</p>


<p>Für den Ersatzwiderstand <mjx-container class="MathJax" jax="SVG"><svg alt=" R_{A B} " style="vertical-align: -0.345ex" xmlns="http://www.w3.org/2000/svg" width="4.244ex" height="1.891ex" role="img" focusable="false" viewBox="0 -683 1876 835.7" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1203-TEX-I-1D445" d="M230 637Q203 637 198 638T193 649Q193 676 204 682Q206 683 378 683Q550 682 564 680Q620 672 658 652T712 606T733 563T739 529Q739 484 710 445T643 385T576 351T538 338L545 333Q612 295 612 223Q612 212 607 162T602 80V71Q602 53 603 43T614 25T640 16Q668 16 686 38T712 85Q717 99 720 102T735 105Q755 105 755 93Q755 75 731 36Q693 -21 641 -21H632Q571 -21 531 4T487 82Q487 109 502 166T517 239Q517 290 474 313Q459 320 449 321T378 323H309L277 193Q244 61 244 59Q244 55 245 54T252 50T269 48T302 46H333Q339 38 339 37T336 19Q332 6 326 0H311Q275 2 180 2Q146 2 117 2T71 2T50 1Q33 1 33 10Q33 12 36 24Q41 43 46 45Q50 46 61 46H67Q94 46 127 49Q141 52 146 61Q149 65 218 339T287 628Q287 635 230 637ZM630 554Q630 586 609 608T523 636Q521 636 500 636T462 637H440Q393 637 386 627Q385 624 352 494T319 361Q319 360 388 360Q466 361 492 367Q556 377 592 426Q608 449 619 486T630 554Z"></path><path id="MJX-1203-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-1203-TEX-I-1D435" d="M231 637Q204 637 199 638T194 649Q194 676 205 682Q206 683 335 683Q594 683 608 681Q671 671 713 636T756 544Q756 480 698 429T565 360L555 357Q619 348 660 311T702 219Q702 146 630 78T453 1Q446 0 242 0Q42 0 39 2Q35 5 35 10Q35 17 37 24Q42 43 47 45Q51 46 62 46H68Q95 46 128 49Q142 52 147 61Q150 65 219 339T288 628Q288 635 231 637ZM649 544Q649 574 634 600T585 634Q578 636 493 637Q473 637 451 637T416 636H403Q388 635 384 626Q382 622 352 506Q352 503 351 500L320 374H401Q482 374 494 376Q554 386 601 434T649 544ZM595 229Q595 273 572 302T512 336Q506 337 429 337Q311 337 310 336Q310 334 293 263T258 122L240 52Q240 48 252 48T333 46Q422 46 429 47Q491 54 543 105T595 229Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="msub"><g data-mml-node="mi"><use xlink:href="#MJX-1203-TEX-I-1D445"></use></g><g data-mml-node="TeXAtom" transform="translate(759, -152.7) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mi"><use xlink:href="#MJX-1203-TEX-I-1D434"></use></g><g data-mml-node="mi" transform="translate(750, 0)"><use xlink:href="#MJX-1203-TEX-I-1D435"></use></g></g></g></g></g></svg></mjx-container> gilt</p>


<p>\[ R_{A B}=R_{4} \|\left(R_{1}+\left(R_{3} \| R_{2}\right)\right)=\frac{R_{4} \cdot\left(R_{1}+\frac{R_{2} \cdot R_{3}}{R_{2}+R_{3}}\right)}{R_{4}+R_{1}+\frac{R_{2} \cdot R_{3}}{R_{2}+R_{3}}} \)</p>
<p>\[ =\frac{R_{1} \cdot R_{4} \cdot\left(R_{2}+R_{3}\right)+R_{2} \cdot R_{3} \cdot R_{4}}{R_{4} \cdot\left(R_{2}+R_{3}\right)+R_{1} \cdot\left(R_{2}+R_{3}\right)+R_{2} \cdot R_{3}} \]</p>

<p>Gegeben ist die überbrückte T-Schaltung.</p>
<div class="horizontalLayoutContainer" style="display: flex; flex-direction: row;">
<div class="horizontalLayoutElement" style="padding-right: 10px; flex: 1;">
<p>Berechnen Sie den Widerstand an den Klemmen \( (\mathrm{A})-(\mathrm{B}) \) bei:</p>
<ol style="list-style-type: lower-alpha;">
<li>offenen Klemmen (C) \( -(\mathrm{D}) \)</li>
<li>kurzgeschlossenen Klemmen (C) \( - \) (D)</li>
</ol>
<p>und bringen Sie die Ergebnisse auf einen Hauptnenner.</p>
</div>
<div class="horizontalLayoutElement" style="padding-left: 10px; flex: 1;">
<p class="horizontalLayoutText"><img style="width: 64%; height: auto; display: block; margin-left: auto; margin-right: auto;" src="https://storage.googleapis.com/max-academy-image-bucket/60211e27aec539e275ba1a4f.png" alt="Abbildung" height="221" /></p>
</div>
</div>
<p> </p>

<p>Gegeben ist die überbrückte T-Schaltung.</p>
<div class="horizontalLayoutContainer" style="display: flex; flex-direction: row;">
<div class="horizontalLayoutElement" style="padding-right: 10px; flex: 1;">
<p>Berechnen Sie den Widerstand an den Klemmen <mjx-container class="MathJax" jax="SVG"><svg alt=" (\mathrm{A})-(\mathrm{B}) " style="vertical-align: -0.566ex" xmlns="http://www.w3.org/2000/svg" width="9.585ex" height="2.262ex" role="img" focusable="false" viewBox="0 -750 4236.4 1000" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1189-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-1189-TEX-N-41" d="M255 0Q240 3 140 3Q48 3 39 0H32V46H47Q119 49 139 88Q140 91 192 245T295 553T348 708Q351 716 366 716H376Q396 715 400 709Q402 707 508 390L617 67Q624 54 636 51T687 46H717V0H708Q699 3 581 3Q458 3 437 0H427V46H440Q510 46 510 64Q510 66 486 138L462 209H229L209 150Q189 91 189 85Q189 72 209 59T259 46H264V0H255ZM447 255L345 557L244 256Q244 255 345 255H447Z"></path><path id="MJX-1189-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path><path id="MJX-1189-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-1189-TEX-N-42" d="M131 622Q124 629 120 631T104 634T61 637H28V683H229H267H346Q423 683 459 678T531 651Q574 627 599 590T624 512Q624 461 583 419T476 360L466 357Q539 348 595 302T651 187Q651 119 600 67T469 3Q456 1 242 0H28V46H61Q103 47 112 49T131 61V622ZM511 513Q511 560 485 594T416 636Q415 636 403 636T371 636T333 637Q266 637 251 636T232 628Q229 624 229 499V374H312L396 375L406 377Q410 378 417 380T442 393T474 417T499 456T511 513ZM537 188Q537 239 509 282T430 336L329 337H229V200V116Q229 57 234 52Q240 47 334 47H383Q425 47 443 53Q486 67 511 104T537 188Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1189-TEX-N-28"></use></g><g data-mml-node="TeXAtom" data-mjx-texclass="ORD" transform="translate(389, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1189-TEX-N-41"></use></g></g><g data-mml-node="mo" transform="translate(1139, 0)"><use xlink:href="#MJX-1189-TEX-N-29"></use></g><g data-mml-node="mo" transform="translate(1750.2, 0)"><use xlink:href="#MJX-1189-TEX-N-2212"></use></g><g data-mml-node="mo" transform="translate(2750.4, 0)"><use xlink:href="#MJX-1189-TEX-N-28"></use></g><g data-mml-node="TeXAtom" data-mjx-texclass="ORD" transform="translate(3139.4, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1189-TEX-N-42"></use></g></g><g data-mml-node="mo" transform="translate(3847.4, 0)"><use xlink:href="#MJX-1189-TEX-N-29"></use></g></g></g></svg></mjx-container> bei:</p>
<ol style="list-style-type: lower-alpha;">
<li>offenen Klemmen (C) <mjx-container class="MathJax" jax="SVG"><svg alt=" -(\mathrm{D}) " style="vertical-align: -0.566ex" xmlns="http://www.w3.org/2000/svg" width="5.249ex" height="2.262ex" role="img" focusable="false" viewBox="0 -750 2320 1000" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1190-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-1190-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-1190-TEX-N-44" d="M130 622Q123 629 119 631T103 634T60 637H27V683H228Q399 682 419 682T461 676Q504 667 546 641T626 573T685 470T708 336Q708 210 634 116T442 3Q429 1 228 0H27V46H60Q102 47 111 49T130 61V622ZM593 338Q593 439 571 501T493 602Q439 637 355 637H322H294Q238 637 234 628Q231 624 231 344Q231 62 232 59Q233 49 248 48T339 46H350Q456 46 515 95Q561 133 577 191T593 338Z"></path><path id="MJX-1190-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1190-TEX-N-2212"></use></g><g data-mml-node="mo" transform="translate(778, 0)"><use xlink:href="#MJX-1190-TEX-N-28"></use></g><g data-mml-node="TeXAtom" data-mjx-texclass="ORD" transform="translate(1167, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-1190-TEX-N-44"></use></g></g><g data-mml-node="mo" transform="translate(1931, 0)"><use xlink:href="#MJX-1190-TEX-N-29"></use></g></g></g></svg></mjx-container></li>
<li>kurzgeschlossenen Klemmen (C) <mjx-container class="MathJax" jax="SVG"><svg alt=" - " style="vertical-align: -0.186ex" xmlns="http://www.w3.org/2000/svg" width="1.76ex" height="1.505ex" role="img" focusable="false" viewBox="0 -583 778 665" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-1191-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-1191-TEX-N-2212"></use></g></g></g></svg></mjx-container> (D)</li>
</ol>
<p>und bringen Sie die Ergebnisse auf einen Hauptnenner.</p>
</div>
<div class="horizontalLayoutElement" style="padding-left: 10px; flex: 1;">
<p class="horizontalLayoutText"><img style="width: 64%; height: auto; display: block; margin-left: auto; margin-right: auto;" src="https://storage.googleapis.com/max-academy-image-bucket/60211e27aec539e275ba1a4f.png" alt="Abbildung" height="221" /></p>
</div>
</div>
<p> </p>

Dies ist eine interaktive Aufgabe zu: Reihenschaltung, Parallelschaltung mit praktischen Tipps zum Lösen und einer Zusammenfassung der nötigen Theorie

Widerstandsnetzwerke - Reihenschaltung, Parallelschaltung | Aufgabe mi

Aufgabenstellung:

Lösungsweg:

Lösung: