{"id":84746,"date":"2025-06-01T02:48:10","date_gmt":"2025-06-01T02:48:10","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=84746"},"modified":"2025-06-01T02:48:10","modified_gmt":"2025-06-01T02:48:10","slug":"working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/","title":{"rendered":"Working of safety fuses depends upon\n \n magnetic effect of the current"},"content":{"rendered":"<p>Working of safety fuses depends upon<\/p>\n<ul>\n<li>magnetic effect of the current<\/li>\n<li>chemical effect of the current<\/li>\n<li>magnitude of the current<\/li>\n<li>heating effect of the current<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below.<\/p>\n<p>[amp_mcq option1=&#8221;1, 2, 3 and 4&#8243; option2=&#8221;1, 2 and 3 only&#8221; option3=&#8221;3 and 4 only&#8221; option4=&#8221;4 only&#8221; correct=&#8221;option3&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC CDS-1 &#8211; 2018<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-cds-1-2018.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-cds-1-2018\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nA safety fuse is designed to protect electrical circuits from overcurrents. It consists of a wire made of a material with a low melting point (like tin-lead alloy) and a specific resistance. When the current flowing through the wire exceeds a safe limit (the fuse rating), the wire heats up significantly due to the **heating effect of the current** (Joule heating, H = I\u00b2Rt). If the **magnitude of the current** is sufficiently high, the heat generated melts the fuse wire, breaking the circuit and stopping the flow of current. Therefore, the working of a safety fuse depends on the magnitude of the current and its heating effect.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\n&#8211; The heating effect of electric current states that heat is produced when current flows through a resistance.<br \/>\n&#8211; The amount of heat produced is proportional to the square of the current (I\u00b2), the resistance (R), and the time (t).<br \/>\n&#8211; Fuse wire melts when the heat generated by excessive current raises its temperature to its melting point.<br \/>\n&#8211; The specific melting current is determined by the material, length, and thickness of the fuse wire.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nMagnetic effect of current is used in devices like circuit breakers which use an electromagnet to trip a switch when current exceeds a limit. Chemical effect of current is associated with electrolysis. Neither magnetic nor chemical effects are the primary working principles of a simple fuse wire melting due to overcurrent. Only the magnitude of current (as it determines the heat) and the heating effect are relevant.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Working of safety fuses depends upon magnetic effect of the current chemical effect of the current magnitude of the current heating effect of the current Select the correct answer using the code given below. [amp_mcq option1=&#8221;1, 2, 3 and 4&#8243; option2=&#8221;1, 2 and 3 only&#8221; option3=&#8221;3 and 4 only&#8221; option4=&#8221;4 only&#8221; correct=&#8221;option3&#8243;] This question was &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Working of safety fuses depends upon\n \n magnetic effect of the current\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/#more-84746\">Detailed Solution<span class=\"screen-reader-text\">Working of safety fuses depends upon<\/p>\n<p> magnetic effect of the current<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1087],"tags":[1114,1201,1128],"class_list":["post-84746","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1114","tag-electric-current","tag-physics","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Working of safety fuses depends upon  magnetic effect of the current<\/title>\n<meta name=\"description\" content=\"A safety fuse is designed to protect electrical circuits from overcurrents. It consists of a wire made of a material with a low melting point (like tin-lead alloy) and a specific resistance. When the current flowing through the wire exceeds a safe limit (the fuse rating), the wire heats up significantly due to the **heating effect of the current** (Joule heating, H = I\u00b2Rt). If the **magnitude of the current** is sufficiently high, the heat generated melts the fuse wire, breaking the circuit and stopping the flow of current. Therefore, the working of a safety fuse depends on the magnitude of the current and its heating effect. - The heating effect of electric current states that heat is produced when current flows through a resistance. - The amount of heat produced is proportional to the square of the current (I\u00b2), the resistance (R), and the time (t). - Fuse wire melts when the heat generated by excessive current raises its temperature to its melting point. - The specific melting current is determined by the material, length, and thickness of the fuse wire.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Working of safety fuses depends upon  magnetic effect of the current\" \/>\n<meta property=\"og:description\" content=\"A safety fuse is designed to protect electrical circuits from overcurrents. It consists of a wire made of a material with a low melting point (like tin-lead alloy) and a specific resistance. When the current flowing through the wire exceeds a safe limit (the fuse rating), the wire heats up significantly due to the **heating effect of the current** (Joule heating, H = I\u00b2Rt). If the **magnitude of the current** is sufficiently high, the heat generated melts the fuse wire, breaking the circuit and stopping the flow of current. Therefore, the working of a safety fuse depends on the magnitude of the current and its heating effect. - The heating effect of electric current states that heat is produced when current flows through a resistance. - The amount of heat produced is proportional to the square of the current (I\u00b2), the resistance (R), and the time (t). - Fuse wire melts when the heat generated by excessive current raises its temperature to its melting point. - The specific melting current is determined by the material, length, and thickness of the fuse wire.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T02:48:10+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Working of safety fuses depends upon  magnetic effect of the current","description":"A safety fuse is designed to protect electrical circuits from overcurrents. It consists of a wire made of a material with a low melting point (like tin-lead alloy) and a specific resistance. When the current flowing through the wire exceeds a safe limit (the fuse rating), the wire heats up significantly due to the **heating effect of the current** (Joule heating, H = I\u00b2Rt). If the **magnitude of the current** is sufficiently high, the heat generated melts the fuse wire, breaking the circuit and stopping the flow of current. Therefore, the working of a safety fuse depends on the magnitude of the current and its heating effect. - The heating effect of electric current states that heat is produced when current flows through a resistance. - The amount of heat produced is proportional to the square of the current (I\u00b2), the resistance (R), and the time (t). - Fuse wire melts when the heat generated by excessive current raises its temperature to its melting point. - The specific melting current is determined by the material, length, and thickness of the fuse wire.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/","og_locale":"en_US","og_type":"article","og_title":"Working of safety fuses depends upon  magnetic effect of the current","og_description":"A safety fuse is designed to protect electrical circuits from overcurrents. It consists of a wire made of a material with a low melting point (like tin-lead alloy) and a specific resistance. When the current flowing through the wire exceeds a safe limit (the fuse rating), the wire heats up significantly due to the **heating effect of the current** (Joule heating, H = I\u00b2Rt). If the **magnitude of the current** is sufficiently high, the heat generated melts the fuse wire, breaking the circuit and stopping the flow of current. Therefore, the working of a safety fuse depends on the magnitude of the current and its heating effect. - The heating effect of electric current states that heat is produced when current flows through a resistance. - The amount of heat produced is proportional to the square of the current (I\u00b2), the resistance (R), and the time (t). - Fuse wire melts when the heat generated by excessive current raises its temperature to its melting point. - The specific melting current is determined by the material, length, and thickness of the fuse wire.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T02:48:10+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/","url":"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/","name":"Working of safety fuses depends upon magnetic effect of the current","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T02:48:10+00:00","dateModified":"2025-06-01T02:48:10+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"A safety fuse is designed to protect electrical circuits from overcurrents. It consists of a wire made of a material with a low melting point (like tin-lead alloy) and a specific resistance. When the current flowing through the wire exceeds a safe limit (the fuse rating), the wire heats up significantly due to the **heating effect of the current** (Joule heating, H = I\u00b2Rt). If the **magnitude of the current** is sufficiently high, the heat generated melts the fuse wire, breaking the circuit and stopping the flow of current. Therefore, the working of a safety fuse depends on the magnitude of the current and its heating effect. - The heating effect of electric current states that heat is produced when current flows through a resistance. - The amount of heat produced is proportional to the square of the current (I\u00b2), the resistance (R), and the time (t). - Fuse wire melts when the heat generated by excessive current raises its temperature to its melting point. - The specific melting current is determined by the material, length, and thickness of the fuse wire.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/working-of-safety-fuses-depends-upon-magnetic-effect-of-the-current\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-1\/"},{"@type":"ListItem","position":3,"name":"Working of safety fuses depends upon magnetic effect of the current"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/84746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=84746"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/84746\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=84746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=84746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=84746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}