{"id":88450,"date":"2025-06-01T07:11:27","date_gmt":"2025-06-01T07:11:27","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88450"},"modified":"2025-06-01T07:11:27","modified_gmt":"2025-06-01T07:11:27","slug":"if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/","title":{"rendered":"If a free electron moves through a potential difference of 1 kV, then"},"content":{"rendered":"

If a free electron moves through a potential difference of 1 kV, then the energy gained by the electron is given by<\/p>\n

[amp_mcq option1=”1.6 \u00d7 10\u207b\u00b9\u2079 J” option2=”1.6 \u00d7 10\u207b\u00b9\u2076 J” option3=”1 \u00d7 10\u207b\u00b9\u2079 J” option4=”1 \u00d7 10\u207b\u00b9\u2076 J” correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe energy gained or lost by a charge (q) moving through a potential difference (V) is given by \u0394E = qV. The charge of a free electron is e = 1.602 \u00d7 10\u207b\u00b9\u2079 Coulombs. The potential difference is 1 kV = 1000 Volts. Therefore, the energy gained is \u0394E = (1.602 \u00d7 10\u207b\u00b9\u2079 C) \u00d7 (1000 V) = 1.602 \u00d7 10\u207b\u00b9\u2076 Joules. Option B is the closest value.
\n<\/section>\n
\nThis question tests the concept of electric potential energy and its relation to potential difference and charge (\u0394E = q\u0394V). It also requires knowing the charge of an electron and unit conversions (kV to V).
\n<\/section>\n
\nThe energy gained by an electron moving through a potential difference of 1 Volt is defined as 1 electronvolt (eV). So, moving through 1 kV (1000 V) gives an energy gain of 1000 eV. Since 1 eV = 1.602 \u00d7 10\u207b\u00b9\u2079 J, 1000 eV = 1000 \u00d7 1.602 \u00d7 10\u207b\u00b9\u2079 J = 1.602 \u00d7 10\u207b\u00b9\u2076 J.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

If a free electron moves through a potential difference of 1 kV, then the energy gained by the electron is given by [amp_mcq option1=”1.6 \u00d7 10\u207b\u00b9\u2079 J” option2=”1.6 \u00d7 10\u207b\u00b9\u2076 J” option3=”1 \u00d7 10\u207b\u00b9\u2079 J” option4=”1 \u00d7 10\u207b\u00b9\u2076 J” correct=”option2″] This question was previously asked in UPSC NDA-2 – 2018 Download PDFAttempt Online The energy … <\/p>\n

Detailed SolutionIf a free electron moves through a potential difference of 1 kV, then<\/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":[1114,1201,1128],"class_list":["post-88450","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1114","tag-electric-current","tag-physics","no-featured-image-padding"],"yoast_head":"\nIf a free electron moves through a potential difference of 1 kV, then<\/title>\n<meta name=\"description\" content=\"The energy gained or lost by a charge (q) moving through a potential difference (V) is given by \u0394E = qV. The charge of a free electron is e = 1.602 \u00d7 10\u207b\u00b9\u2079 Coulombs. The potential difference is 1 kV = 1000 Volts. Therefore, the energy gained is \u0394E = (1.602 \u00d7 10\u207b\u00b9\u2079 C) \u00d7 (1000 V) = 1.602 \u00d7 10\u207b\u00b9\u2076 Joules. Option B is the closest value. This question tests the concept of electric potential energy and its relation to potential difference and charge (\u0394E = q\u0394V). It also requires knowing the charge of an electron and unit conversions (kV to V).\" \/>\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\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"If a free electron moves through a potential difference of 1 kV, then\" \/>\n<meta property=\"og:description\" content=\"The energy gained or lost by a charge (q) moving through a potential difference (V) is given by \u0394E = qV. The charge of a free electron is e = 1.602 \u00d7 10\u207b\u00b9\u2079 Coulombs. The potential difference is 1 kV = 1000 Volts. Therefore, the energy gained is \u0394E = (1.602 \u00d7 10\u207b\u00b9\u2079 C) \u00d7 (1000 V) = 1.602 \u00d7 10\u207b\u00b9\u2076 Joules. Option B is the closest value. This question tests the concept of electric potential energy and its relation to potential difference and charge (\u0394E = q\u0394V). It also requires knowing the charge of an electron and unit conversions (kV to V).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:11:27+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":"If a free electron moves through a potential difference of 1 kV, then","description":"The energy gained or lost by a charge (q) moving through a potential difference (V) is given by \u0394E = qV. The charge of a free electron is e = 1.602 \u00d7 10\u207b\u00b9\u2079 Coulombs. The potential difference is 1 kV = 1000 Volts. Therefore, the energy gained is \u0394E = (1.602 \u00d7 10\u207b\u00b9\u2079 C) \u00d7 (1000 V) = 1.602 \u00d7 10\u207b\u00b9\u2076 Joules. Option B is the closest value. This question tests the concept of electric potential energy and its relation to potential difference and charge (\u0394E = q\u0394V). It also requires knowing the charge of an electron and unit conversions (kV to V).","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\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/","og_locale":"en_US","og_type":"article","og_title":"If a free electron moves through a potential difference of 1 kV, then","og_description":"The energy gained or lost by a charge (q) moving through a potential difference (V) is given by \u0394E = qV. The charge of a free electron is e = 1.602 \u00d7 10\u207b\u00b9\u2079 Coulombs. The potential difference is 1 kV = 1000 Volts. Therefore, the energy gained is \u0394E = (1.602 \u00d7 10\u207b\u00b9\u2079 C) \u00d7 (1000 V) = 1.602 \u00d7 10\u207b\u00b9\u2076 Joules. Option B is the closest value. This question tests the concept of electric potential energy and its relation to potential difference and charge (\u0394E = q\u0394V). It also requires knowing the charge of an electron and unit conversions (kV to V).","og_url":"https:\/\/exam.pscnotes.com\/mcq\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:11:27+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\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/","url":"https:\/\/exam.pscnotes.com\/mcq\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/","name":"If a free electron moves through a potential difference of 1 kV, then","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:11:27+00:00","dateModified":"2025-06-01T07:11:27+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The energy gained or lost by a charge (q) moving through a potential difference (V) is given by \u0394E = qV. The charge of a free electron is e = 1.602 \u00d7 10\u207b\u00b9\u2079 Coulombs. The potential difference is 1 kV = 1000 Volts. Therefore, the energy gained is \u0394E = (1.602 \u00d7 10\u207b\u00b9\u2079 C) \u00d7 (1000 V) = 1.602 \u00d7 10\u207b\u00b9\u2076 Joules. Option B is the closest value. This question tests the concept of electric potential energy and its relation to potential difference and charge (\u0394E = q\u0394V). It also requires knowing the charge of an electron and unit conversions (kV to V).","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/if-a-free-electron-moves-through-a-potential-difference-of-1-kv-then\/#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":"If a free electron moves through a potential difference of 1 kV, then"}]},{"@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\/88450","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=88450"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88450\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}