{"id":2384,"date":"2023-04-13T22:08:09","date_gmt":"2023-04-13T20:08:09","guid":{"rendered":"https:\/\/mxth.dk\/?p=2384"},"modified":"2023-04-13T22:08:09","modified_gmt":"2023-04-13T20:08:09","slug":"emneopgave-elektriske-kredsloeb","status":"publish","type":"post","link":"https:\/\/mxth.dk\/?p=2384","title":{"rendered":"Emneopgave &#8211; elektriske kredsl\u00f8b"},"content":{"rendered":"\n<div class=\" wp-block-cover alignfull has-parallax eplus-wrapper\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><div role=\"img\" class=\"wp-block-cover__image-background wp-image-2385 has-parallax\" style=\"background-position:50% 50%;background-image:url(https:\/\/mxth.dk\/wp-content\/uploads\/2023\/04\/B5C6E408-FC8B-456B-9F4C-34D4606947B9-scaled.jpeg)\"><\/div><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\"><p class=\" has-text-align-center has-large-font-size eplus-wrapper eplus-styles-uid-11d6d4\">EMNEOPGAVE<\/p>\n\n<p class=\" has-text-align-center eplus-wrapper eplus-styles-uid-83a57b\">Elektriske kredsl\u00f8b<\/p><\/div><\/div>\n\n\n<p class=\" has-text-align-right eplus-wrapper eplus-styles-uid-34e78c\">Photo by\u00a0<a href=\"https:\/\/unsplash.com\/@spaablauw?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Joppe Spaa<\/a>\u00a0on\u00a0<a href=\"https:\/\/unsplash.com\/s\/photos\/vintage-car?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Unsplash<\/a><\/p>\n\n\n<p class=\" eplus-wrapper\">En bil har en generator som genererer en vekselstr\u00f8m og ensrettes til en j\u00e6vnstr\u00f8m gennem en ensretter (kaldet en Graetzkobling). Generatoren skal leverer 12 V i j\u00e6vnsp\u00e6nding.<\/p>\n\n\n<ol class=\"eplus-wrapper wp-block-list eplus-styles-uid-3ac4c2\">\n<li class=\" eplus-wrapper\">Hvad er den maksimale v\u00e6rdi for vekselsp\u00e6ndingen som generatoren skal leverer?<\/li>\n<\/ol>\n\n\n<p class=\" eplus-wrapper\">Under k\u00f8rslen vil f\u00f8reren gerne oplade sin iPhone. Denne oplades gennem et stik som sidder i cigarettet\u00e6nderen i bilen. Stikket indeholder en transformator der omdanner de 12V fra bilen til 5V som bruges til at oplade telefonen med.<\/p>\n\n\n<ol start=\"2\" class=\"eplus-wrapper wp-block-list eplus-styles-uid-7bb6cf\">\n<li class=\" eplus-wrapper\">Hvad skal forholdet mellem vindingerne p\u00e5 den prim\u00e6rer og den sekund\u00e6rer spole v\u00e6re for at kunne lave denne transformation?<\/li>\n\n\n\n<li class=\" eplus-wrapper\">Transformatoren har en udgangseffekt p\u00e5 10W, hvor stor er str\u00f8mstyrken p\u00e5 den sekund\u00e6rer side af transformatoreren?<\/li>\n<\/ol>\n\n\n<p class=\" eplus-wrapper\">I bilen er der ogs\u00e5 en cigarett\u00e6nder i bagagerummet, s\u00e5ledes at ejeren kan tilslutte en elektrisk k\u00f8letaske til stikket i bagagerummet og s\u00e5ledes holde sine danskvand kolde.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Dette stik forsynes med str\u00f8m gennem ledninger fra bilens motor og ned gennem bilen. De er lavet af kobber og har en diameter p\u00e5 0,1 mm.<\/p>\n\n\n<ol start=\"4\" class=\"eplus-wrapper wp-block-list eplus-styles-uid-da1580\">\n<li class=\" eplus-wrapper\">Kom med et bud p\u00e5, hvor stor resistansen i en af disse ledninger er.<\/li>\n\n\n\n<li class=\" eplus-wrapper\">Hvis str\u00f8mmen leveres at generatoren som kan leverer en effekt p\u00e5 720W, hvor stort et tab er der s\u00e5 i en ledning?<\/li>\n\n\n\n<li class=\" eplus-wrapper\">Hvis nu man transformerede sp\u00e6ndingen op, s\u00e5ledes at den leverede sp\u00e6nding var 96V i stedet for de 12V, hvor stort ville tabet s\u00e5 v\u00e6re?<\/li>\n<\/ol>\n\n\n<p class=\" eplus-wrapper\">Bilen er ogs\u00e5 forsynet med halogenp\u00e6rer. Disse har en effekt p\u00e5 55W og forsynes af en sp\u00e6nding p\u00e5 12V.<\/p>\n\n\n<ol start=\"7\" class=\"eplus-wrapper wp-block-list eplus-styles-uid-567832\">\n<li class=\" eplus-wrapper\">Hvor stor er resistansen i disse p\u00e6rer?<\/li>\n<\/ol>\n\n\n<p class=\" eplus-wrapper\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Photo by\u00a0Joppe Spaa\u00a0on\u00a0Unsplash En bil har en generator som genererer en vekselstr\u00f8m og ensrettes til en j\u00e6vnstr\u00f8m gennem en ensretter (kaldet en Graetzkobling). Generatoren skal leverer 12 V i j\u00e6vnsp\u00e6nding. Under k\u00f8rslen vil f\u00f8reren gerne oplade sin iPhone. Denne oplades gennem et stik som sidder i cigarettet\u00e6nderen i bilen. Stikket indeholder en transformator der omdanner [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","editor_plus_copied_stylings":"{}","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[38,39,2],"tags":[],"class_list":["post-2384","post","type-post","status-publish","format-standard","hentry","category-emneopgave","category-eux","category-fysik"],"featured_image_src":null,"author_info":{"display_name":"Henriksen","author_link":"https:\/\/mxth.dk\/?author=1"},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/posts\/2384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2384"}],"version-history":[{"count":3,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/posts\/2384\/revisions"}],"predecessor-version":[{"id":2397,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/posts\/2384\/revisions\/2397"}],"wp:attachment":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}