{"id":2358,"date":"2025-05-31T20:32:02","date_gmt":"2025-05-31T17:32:02","guid":{"rendered":"https:\/\/cedra.academy\/?p=2358"},"modified":"2025-09-12T20:41:21","modified_gmt":"2025-09-12T17:41:21","slug":"electromagnetii","status":"publish","type":"post","link":"https:\/\/cedra.academy\/?p=2358","title":{"rendered":"Electromagne\u021bii"},"content":{"rendered":"\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-d1a37e08-9157-4250-986f-6b119dc40e2d\" href=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii-Forta-invizibila-a-curentului-electric.pptx\">Electromagnetii  For\u0219a  invizibil\u0103  a  curentului electric                          PPTX      .<\/a><a href=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii-Forta-invizibila-a-curentului-electric.pptx\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-d1a37e08-9157-4250-986f-6b119dc40e2d\">Descarc\u0103<\/a><\/div>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"419\" src=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii1.jpeg\" alt=\"\" class=\"wp-image-2360\" style=\"aspect-ratio:1.5274463007159904;width:486px;height:auto\" srcset=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii1.jpeg 640w, https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii1-300x196.jpeg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p>Electromagne\u021bii sunt magne\u021bi care \u00ee\u0219i produc c\u00e2mpul magnetic datorit\u0103 trecerii curentului electric printr-un conductor. \u00cen general, un electromagnet este format dintr-un <strong>fir conductor \u00eenf\u0103\u0219urat \u00een spiral\u0103 (bobin\u0103)<\/strong>, \u00een jurul c\u0103reia poate fi plasat un <strong>miez de fier<\/strong> pentru a amplifica c\u00e2mpul magnetic.<\/p>\n\n\n\n<p><strong>Principalele caracteristici \u0219i utiliz\u0103ri:<\/strong><\/p>\n\n\n\n<ul>\n<li><strong>Controlabilitate:<\/strong> C\u00e2mpul magnetic apare numai c\u00e2nd curentul electric trece prin bobin\u0103; se poate porni \u0219i opri rapid.<\/li>\n\n\n\n<li><strong>Putere ajustabil\u0103:<\/strong> Intensitatea c\u00e2mpului poate fi modificat\u0103 prin schimbarea curentului sau a num\u0103rului de spire.<\/li>\n\n\n\n<li><strong>Utiliz\u0103ri practice:<\/strong> Se folosesc \u00een electromotoare, relee electrice, generatoare, magne\u021bi de ridicare a obiectelor grele din metal \u0219i \u00een multe aparate electronice.<\/li>\n<\/ul>\n\n\n\n<p>Electromagne\u021bii sunt esen\u021biali \u00een via\u021ba de zi cu zi \u0219i \u00een tehnologie, deoarece combin\u0103 <strong>electricitatea \u0219i magnetismul<\/strong> pentru a produce efecte utile \u0219i precise.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"700\" height=\"394\" src=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii2.png\" alt=\"\" class=\"wp-image-2362\" srcset=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii2.png 700w, https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii2-300x169.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"505\" height=\"575\" src=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii3.png\" alt=\"\" class=\"wp-image-2363\" srcset=\"https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii3.png 505w, https:\/\/cedra.academy\/wp-content\/uploads\/2025\/09\/Electromagnetii3-263x300.png 263w\" sizes=\"(max-width: 505px) 100vw, 505px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Electromagne\u021bii sunt magne\u021bi care \u00ee\u0219i produc c\u00e2mpul magnetic datorit\u0103 trecerii curentului electric printr-un conductor. \u00cen general, un electromagnet este format dintr-un fir conductor \u00eenf\u0103\u0219urat \u00een spiral\u0103 (bobin\u0103), \u00een jurul c\u0103reia [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2366,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,10],"tags":[],"_links":{"self":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/2358"}],"collection":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2358"}],"version-history":[{"count":2,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/2358\/revisions"}],"predecessor-version":[{"id":2365,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/posts\/2358\/revisions\/2365"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=\/wp\/v2\/media\/2366"}],"wp:attachment":[{"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cedra.academy\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}