{"id":88956,"date":"2025-06-01T07:25:31","date_gmt":"2025-06-01T07:25:31","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88956"},"modified":"2025-06-01T07:25:31","modified_gmt":"2025-06-01T07:25:31","slug":"which-of-the-following-statements-are-correct-about-the-electrical-res","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/","title":{"rendered":"Which of the following statements are correct about the electrical res"},"content":{"rendered":"<p>Which of the following statements are correct about the electrical resistance and resistivity of a wire?<\/p>\n<ul>\n<li>1. Both quantities depend on the area of cross-section of the wire<\/li>\n<li>2. Both depend on the temperature<\/li>\n<li>3. Resistance of the wire is directly proportional to the resistivity of the wire<\/li>\n<li>4. Resistivity of the wire is directly proportional to the length of the wire<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below :<\/p>\n<p>[amp_mcq option1=&#8221;1 and 2&#8243; option2=&#8221;1 and 3&#8243; option3=&#8221;2 and 3&#8243; option4=&#8221;2 and 4&#8243; 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 NDA-2 &#8211; 2023<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-nda-2-2023.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-nda-2-2023\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nC) 2 and 3 are the correct statements.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\n&#8211; The resistance (R) of a wire is given by the formula R = \u03c1 * (L\/A), where \u03c1 is the resistivity of the material, L is the length of the wire, and A is the area of its cross-section.<br \/>\n&#8211; Resistivity (\u03c1) is an intrinsic property of the material itself, depending on the material type and temperature, but not on the dimensions (length or area) of the specific wire.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\n&#8211; Statement 1: Resistance depends on the area of cross-section (inversely proportional, R \u221d 1\/A), but resistivity does NOT depend on the area of cross-section. So, statement 1 is incorrect.<br \/>\n&#8211; Statement 2: Both resistance and resistivity of most metallic conductors are dependent on temperature. For metals, both generally increase with increasing temperature. So, statement 2 is correct.<br \/>\n&#8211; Statement 3: From the formula R = \u03c1 * (L\/A), Resistance (R) is directly proportional to resistivity (\u03c1) for a wire of fixed length and area. So, statement 3 is correct.<br \/>\n&#8211; Statement 4: Resistivity (\u03c1) is a material property and does not depend on the length of the wire. So, statement 4 is incorrect.<br \/>\n&#8211; Thus, only statements 2 and 3 are correct.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements are correct about the electrical resistance and resistivity of a wire? 1. Both quantities depend on the area of cross-section of the wire 2. Both depend on the temperature 3. Resistance of the wire is directly proportional to the resistivity of the wire 4. Resistivity of the wire is directly &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following statements are correct about the electrical res\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/#more-88956\">Detailed Solution<span class=\"screen-reader-text\">Which of the following statements are correct about the electrical res<\/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":[1094],"tags":[1105,1200,1128],"class_list":["post-88956","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1105","tag-conductivity","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>Which of the following statements are correct about the electrical res<\/title>\n<meta name=\"description\" content=\"C) 2 and 3 are the correct statements. - The resistance (R) of a wire is given by the formula R = \u03c1 * (L\/A), where \u03c1 is the resistivity of the material, L is the length of the wire, and A is the area of its cross-section. - Resistivity (\u03c1) is an intrinsic property of the material itself, depending on the material type and temperature, but not on the dimensions (length or area) of the specific 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\/which-of-the-following-statements-are-correct-about-the-electrical-res\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following statements are correct about the electrical res\" \/>\n<meta property=\"og:description\" content=\"C) 2 and 3 are the correct statements. - The resistance (R) of a wire is given by the formula R = \u03c1 * (L\/A), where \u03c1 is the resistivity of the material, L is the length of the wire, and A is the area of its cross-section. - Resistivity (\u03c1) is an intrinsic property of the material itself, depending on the material type and temperature, but not on the dimensions (length or area) of the specific wire.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:25:31+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=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which of the following statements are correct about the electrical res","description":"C) 2 and 3 are the correct statements. - The resistance (R) of a wire is given by the formula R = \u03c1 * (L\/A), where \u03c1 is the resistivity of the material, L is the length of the wire, and A is the area of its cross-section. - Resistivity (\u03c1) is an intrinsic property of the material itself, depending on the material type and temperature, but not on the dimensions (length or area) of the specific 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\/which-of-the-following-statements-are-correct-about-the-electrical-res\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements are correct about the electrical res","og_description":"C) 2 and 3 are the correct statements. - The resistance (R) of a wire is given by the formula R = \u03c1 * (L\/A), where \u03c1 is the resistivity of the material, L is the length of the wire, and A is the area of its cross-section. - Resistivity (\u03c1) is an intrinsic property of the material itself, depending on the material type and temperature, but not on the dimensions (length or area) of the specific wire.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:25:31+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/","name":"Which of the following statements are correct about the electrical res","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:25:31+00:00","dateModified":"2025-06-01T07:25:31+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"C) 2 and 3 are the correct statements. - The resistance (R) of a wire is given by the formula R = \u03c1 * (L\/A), where \u03c1 is the resistivity of the material, L is the length of the wire, and A is the area of its cross-section. - Resistivity (\u03c1) is an intrinsic property of the material itself, depending on the material type and temperature, but not on the dimensions (length or area) of the specific wire.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-are-correct-about-the-electrical-res\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-2\/"},{"@type":"ListItem","position":3,"name":"Which of the following statements are correct about the electrical res"}]},{"@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\/88956","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=88956"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88956\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}