{"id":86162,"date":"2025-06-01T03:39:12","date_gmt":"2025-06-01T03:39:12","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86162"},"modified":"2025-06-01T03:39:12","modified_gmt":"2025-06-01T03:39:12","slug":"an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/","title":{"rendered":"An electric circuit is consisting of a cell, an ammeter and a nichrome"},"content":{"rendered":"

An electric circuit is consisting of a cell, an ammeter and a nichrome wire of length l. If the length of the wire is reduced to half (l\/2), then the ammeter reading<\/p>\n

[amp_mcq option1=”decreases to one-half.” option2=”gets doubled.” option3=”decreases to one-third.” option4=”remains unchanged.” correct=”option2″]<\/p>\n

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\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nAccording to Ohm’s law, the current (I) through a circuit is inversely proportional to the resistance (R), assuming the voltage (V) is constant (from the cell). The resistance of a wire is directly proportional to its length (R \u221d l). If the length of the nichrome wire is reduced to half (l\/2), its resistance becomes half (R\/2). Therefore, the current (I = V\/R) will double (I’ = V\/(R\/2) = 2V\/R = 2I). The ammeter reading, which measures the current, will get doubled.
\n<\/section>\n
\nResistance is directly proportional to length. Current is inversely proportional to resistance.
\n<\/section>\n
\nThis assumes the temperature of the wire and other factors remain constant. Nichrome is used as a resistive wire material.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

An electric circuit is consisting of a cell, an ammeter and a nichrome wire of length l. If the length of the wire is reduced to half (l\/2), then the ammeter reading [amp_mcq option1=”decreases to one-half.” option2=”gets doubled.” option3=”decreases to one-third.” option4=”remains unchanged.” correct=”option2″] This question was previously asked in UPSC CDS-2 – 2021 Download … <\/p>\n

Detailed SolutionAn electric circuit is consisting of a cell, an ammeter and a nichrome<\/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":[1088],"tags":[1110,1201,1128],"class_list":["post-86162","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1110","tag-electric-current","tag-physics","no-featured-image-padding"],"yoast_head":"\nAn electric circuit is consisting of a cell, an ammeter and a nichrome<\/title>\n<meta name=\"description\" content=\"According to Ohm's law, the current (I) through a circuit is inversely proportional to the resistance (R), assuming the voltage (V) is constant (from the cell). The resistance of a wire is directly proportional to its length (R \u221d l). If the length of the nichrome wire is reduced to half (l\/2), its resistance becomes half (R\/2). Therefore, the current (I = V\/R) will double (I' = V\/(R\/2) = 2V\/R = 2I). The ammeter reading, which measures the current, will get doubled. Resistance is directly proportional to length. Current is inversely proportional to resistance.\" \/>\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\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"An electric circuit is consisting of a cell, an ammeter and a nichrome\" \/>\n<meta property=\"og:description\" content=\"According to Ohm's law, the current (I) through a circuit is inversely proportional to the resistance (R), assuming the voltage (V) is constant (from the cell). The resistance of a wire is directly proportional to its length (R \u221d l). If the length of the nichrome wire is reduced to half (l\/2), its resistance becomes half (R\/2). Therefore, the current (I = V\/R) will double (I' = V\/(R\/2) = 2V\/R = 2I). The ammeter reading, which measures the current, will get doubled. Resistance is directly proportional to length. Current is inversely proportional to resistance.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:39:12+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":"An electric circuit is consisting of a cell, an ammeter and a nichrome","description":"According to Ohm's law, the current (I) through a circuit is inversely proportional to the resistance (R), assuming the voltage (V) is constant (from the cell). The resistance of a wire is directly proportional to its length (R \u221d l). If the length of the nichrome wire is reduced to half (l\/2), its resistance becomes half (R\/2). Therefore, the current (I = V\/R) will double (I' = V\/(R\/2) = 2V\/R = 2I). The ammeter reading, which measures the current, will get doubled. Resistance is directly proportional to length. Current is inversely proportional to resistance.","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\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/","og_locale":"en_US","og_type":"article","og_title":"An electric circuit is consisting of a cell, an ammeter and a nichrome","og_description":"According to Ohm's law, the current (I) through a circuit is inversely proportional to the resistance (R), assuming the voltage (V) is constant (from the cell). The resistance of a wire is directly proportional to its length (R \u221d l). If the length of the nichrome wire is reduced to half (l\/2), its resistance becomes half (R\/2). Therefore, the current (I = V\/R) will double (I' = V\/(R\/2) = 2V\/R = 2I). The ammeter reading, which measures the current, will get doubled. Resistance is directly proportional to length. Current is inversely proportional to resistance.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:39:12+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\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/","url":"https:\/\/exam.pscnotes.com\/mcq\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/","name":"An electric circuit is consisting of a cell, an ammeter and a nichrome","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:39:12+00:00","dateModified":"2025-06-01T03:39:12+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"According to Ohm's law, the current (I) through a circuit is inversely proportional to the resistance (R), assuming the voltage (V) is constant (from the cell). The resistance of a wire is directly proportional to its length (R \u221d l). If the length of the nichrome wire is reduced to half (l\/2), its resistance becomes half (R\/2). Therefore, the current (I = V\/R) will double (I' = V\/(R\/2) = 2V\/R = 2I). The ammeter reading, which measures the current, will get doubled. Resistance is directly proportional to length. Current is inversely proportional to resistance.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/an-electric-circuit-is-consisting-of-a-cell-an-ammeter-and-a-nichrome\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CDS-2","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-cds-2\/"},{"@type":"ListItem","position":3,"name":"An electric circuit is consisting of a cell, an ammeter and a nichrome"}]},{"@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\/86162","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=86162"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/86162\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=86162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=86162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=86162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}