{"id":3927,"date":"2023-01-09T10:49:57","date_gmt":"2023-01-09T10:49:57","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=3927"},"modified":"2024-12-13T05:59:05","modified_gmt":"2024-12-13T05:59:05","slug":"s-14-c-magnetic-effect-of-electric-current","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-14-c-magnetic-effect-of-electric-current\/","title":{"rendered":"S-14.c Magnetic Effect Of Electric Current"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Magnetic Effect Of Electric Current<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-7efaccaec76a6e7fc8b856f1ee8bfb22\" style=\"color:#000060\"><strong>Introduction to Magnetism:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Magnetic fields are produced around a magnet, and these fields affect magnetic materials (such as iron, nickel, and cobalt).<\/li>\n\n\n\n<li>Electric current produces a magnetic field around a conductor (like a wire).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-8b95ee584e79b3dd720f04216ecc96da\" style=\"color:#000060\"><strong>Oersted&#8217;s Discovery:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Hans Christian Oersted discovered that a current-carrying wire creates a magnetic field around it.<\/li>\n\n\n\n<li>This phenomenon is known as the <strong>magnetic effect of electric current<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-7abe2cddbf60754625412c9e24ce9c24\" style=\"color:#000060\"><strong>Magnetic Field Around a Conductor:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A current-carrying wire generates a circular magnetic field around it.<\/li>\n\n\n\n<li>The direction of the magnetic field can be determined using the <strong>right-hand thumb rule<\/strong>:\n<ul class=\"wp-block-list\">\n<li>If the right hand\u2019s thumb points in the direction of the current, the curled fingers show the direction of the magnetic field.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-fbbfb24ab6e644c4949fc12b903c735f\" style=\"color:#000060\"><strong>Electric Motor:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The magnetic effect of current is used in electric motors.<\/li>\n\n\n\n<li>In a motor, a coil carrying current is placed in a magnetic field. The interaction between the magnetic field and the current causes the coil to rotate.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-31989af590b1b2fc131c8cb0d2d34618\" style=\"color:#000060\"><strong>Solenoid:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A solenoid is a coil of wire, usually wound around a cylindrical object, through which electric current passes.<\/li>\n\n\n\n<li>The magnetic field inside a solenoid is strong, uniform, and resembles that of a bar magnet.<\/li>\n\n\n\n<li>A solenoid is used in devices like electromagnets and electric bells.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-d826effe80e622c20ebfcdfb1d7cb8e0\" style=\"color:#000060\"><strong>Electromagnet:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>An electromagnet is made by wrapping a wire around a soft iron core and passing a current through the wire.<\/li>\n\n\n\n<li>The strength of the magnetic field depends on the number of turns of the wire, the current, and the material of the core.<\/li>\n\n\n\n<li>Electromagnets are used in cranes to lift heavy metallic objects, in electric motors, and in MRI machines.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-28df36cae15817faae176e37d770946d\" style=\"color:#000060\"><strong>Factors Affecting the Magnetic Effect:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The strength of the magnetic field is affected by:\n<ul class=\"wp-block-list\">\n<li>The amount of current (greater current = stronger magnetic field).<\/li>\n\n\n\n<li>The number of turns in the coil (more turns = stronger magnetic field).<\/li>\n\n\n\n<li>The presence of a core material (a soft iron core strengthens the magnetic field).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-1b0424c7e6b400531d8a94cc3390db60\" style=\"color:#000060\"><strong>Magnetic Field and Force:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A current-carrying conductor placed in a magnetic field experiences a force. This is the basis of how electric motors work.<\/li>\n\n\n\n<li>The direction of the force can be determined using the <strong>left-hand rule<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Point the left hand\u2019s fingers in the direction of the magnetic field, the thumb in the direction of the current, and the palm shows the direction of the force on the conductor.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/82458\/665\/307\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-66.png\" alt=\"\" class=\"wp-image-6044\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-66.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-66-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-66-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-66-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81732\/436\/682\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61.png\" alt=\"\" class=\"wp-image-6045\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Magnetic Effect Of Electric Current Key Notes : Introduction to Magnetism: Oersted&#8217;s Discovery: Magnetic Field Around a Conductor: Electric Motor: Solenoid: Electromagnet: Factors Affecting the Magnetic Effect: Magnetic Field and Force: Let&#8217;s practice!<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-3927","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3927"}],"version-history":[{"count":14,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3927\/revisions"}],"predecessor-version":[{"id":15327,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3927\/revisions\/15327"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}