{"id":87541,"date":"2025-06-01T06:47:15","date_gmt":"2025-06-01T06:47:15","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87541"},"modified":"2025-06-01T06:47:15","modified_gmt":"2025-06-01T06:47:15","slug":"which-one-of-the-following-devices-is-non-ohmic","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-devices-is-non-ohmic\/","title":{"rendered":"Which one of the following devices is non-ohmic ?"},"content":{"rendered":"

Which one of the following devices is non-ohmic ?<\/p>\n

[amp_mcq option1=”Conducting copper coil” option2=”Electric heating coil” option3=”Semi conductor diode” option4=”Rheostat” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nAn ohmic device obeys Ohm’s Law (V = IR) where resistance (R) is constant regardless of voltage (V) or current (I). A non-ohmic device does not obey Ohm’s Law; its resistance varies with the applied voltage or current.
\n– Conducting copper coil (A) and Electric heating coil (B) (like Nichrome wire) are generally considered ohmic conductors, although their resistance can change with temperature.
\n– A Rheostat (D) is a variable resistor, but for any fixed resistance setting, it acts as an ohmic resistor.
\n– A Semiconductor diode (C) is a device that exhibits a highly non-linear current-voltage characteristic. It conducts current effectively in only one direction (forward bias) and only above a certain threshold voltage. Its resistance changes dramatically depending on the applied voltage and direction. Therefore, it is a classic example of a non-ohmic device.
\n<\/section>\n
\n– Ohmic devices have constant resistance independent of voltage or current.
\n– Non-ohmic devices have resistance that varies with voltage or current.
\n– Metal conductors are typically ohmic (assuming constant temperature).
\n– Semiconductor devices like diodes and transistors are typically non-ohmic.
\n<\/section>\n
\nThe V-I graph for an ohmic device is a straight line passing through the origin with a slope equal to the resistance. The V-I graph for a non-ohmic device is curved. Examples of non-ohmic devices include vacuum tubes, gas discharge lamps, and semiconductor components like diodes and transistors.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following devices is non-ohmic ? [amp_mcq option1=”Conducting copper coil” option2=”Electric heating coil” option3=”Semi conductor diode” option4=”Rheostat” correct=”option3″] This question was previously asked in UPSC NDA-1 – 2018 Download PDFAttempt Online An ohmic device obeys Ohm’s Law (V = IR) where resistance (R) is constant regardless of voltage (V) or current (I). … <\/p>\n

Detailed SolutionWhich one of the following devices is non-ohmic ?<\/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":[1093],"tags":[1114,1201,1128],"class_list":["post-87541","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1114","tag-electric-current","tag-physics","no-featured-image-padding"],"yoast_head":"\nWhich one of the following devices is non-ohmic ?<\/title>\n<meta name=\"description\" content=\"An ohmic device obeys Ohm's Law (V = IR) where resistance (R) is constant regardless of voltage (V) or current (I). A non-ohmic device does not obey Ohm's Law; its resistance varies with the applied voltage or current. - Conducting copper coil (A) and Electric heating coil (B) (like Nichrome wire) are generally considered ohmic conductors, although their resistance can change with temperature. - A Rheostat (D) is a variable resistor, but for any fixed resistance setting, it acts as an ohmic resistor. - A Semiconductor diode (C) is a device that exhibits a highly non-linear current-voltage characteristic. It conducts current effectively in only one direction (forward bias) and only above a certain threshold voltage. Its resistance changes dramatically depending on the applied voltage and direction. Therefore, it is a classic example of a non-ohmic device. - Ohmic devices have constant resistance independent of voltage or current. - Non-ohmic devices have resistance that varies with voltage or current. - Metal conductors are typically ohmic (assuming constant temperature). - Semiconductor devices like diodes and transistors are typically non-ohmic.\" \/>\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-one-of-the-following-devices-is-non-ohmic\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following devices is non-ohmic ?\" \/>\n<meta property=\"og:description\" content=\"An ohmic device obeys Ohm's Law (V = IR) where resistance (R) is constant regardless of voltage (V) or current (I). A non-ohmic device does not obey Ohm's Law; its resistance varies with the applied voltage or current. - Conducting copper coil (A) and Electric heating coil (B) (like Nichrome wire) are generally considered ohmic conductors, although their resistance can change with temperature. - A Rheostat (D) is a variable resistor, but for any fixed resistance setting, it acts as an ohmic resistor. - A Semiconductor diode (C) is a device that exhibits a highly non-linear current-voltage characteristic. It conducts current effectively in only one direction (forward bias) and only above a certain threshold voltage. Its resistance changes dramatically depending on the applied voltage and direction. Therefore, it is a classic example of a non-ohmic device. - Ohmic devices have constant resistance independent of voltage or current. - Non-ohmic devices have resistance that varies with voltage or current. - Metal conductors are typically ohmic (assuming constant temperature). - Semiconductor devices like diodes and transistors are typically non-ohmic.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-devices-is-non-ohmic\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:47:15+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 one of the following devices is non-ohmic ?","description":"An ohmic device obeys Ohm's Law (V = IR) where resistance (R) is constant regardless of voltage (V) or current (I). A non-ohmic device does not obey Ohm's Law; its resistance varies with the applied voltage or current. - Conducting copper coil (A) and Electric heating coil (B) (like Nichrome wire) are generally considered ohmic conductors, although their resistance can change with temperature. - A Rheostat (D) is a variable resistor, but for any fixed resistance setting, it acts as an ohmic resistor. - A Semiconductor diode (C) is a device that exhibits a highly non-linear current-voltage characteristic. It conducts current effectively in only one direction (forward bias) and only above a certain threshold voltage. Its resistance changes dramatically depending on the applied voltage and direction. Therefore, it is a classic example of a non-ohmic device. - Ohmic devices have constant resistance independent of voltage or current. - Non-ohmic devices have resistance that varies with voltage or current. - Metal conductors are typically ohmic (assuming constant temperature). - Semiconductor devices like diodes and transistors are typically non-ohmic.","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-one-of-the-following-devices-is-non-ohmic\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following devices is non-ohmic ?","og_description":"An ohmic device obeys Ohm's Law (V = IR) where resistance (R) is constant regardless of voltage (V) or current (I). 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Therefore, it is a classic example of a non-ohmic device. - Ohmic devices have constant resistance independent of voltage or current. - Non-ohmic devices have resistance that varies with voltage or current. - Metal conductors are typically ohmic (assuming constant temperature). - Semiconductor devices like diodes and transistors are typically non-ohmic.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-devices-is-non-ohmic\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T06:47:15+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-one-of-the-following-devices-is-non-ohmic\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-devices-is-non-ohmic\/","name":"Which one of the following devices is non-ohmic ?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T06:47:15+00:00","dateModified":"2025-06-01T06:47:15+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"An ohmic device obeys Ohm's Law (V = IR) where resistance (R) is constant regardless of voltage (V) or current (I). 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Therefore, it is a classic example of a non-ohmic device. - Ohmic devices have constant resistance independent of voltage or current. - Non-ohmic devices have resistance that varies with voltage or current. - Metal conductors are typically ohmic (assuming constant temperature). - Semiconductor devices like diodes and transistors are typically non-ohmic.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-devices-is-non-ohmic\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-devices-is-non-ohmic\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-devices-is-non-ohmic\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-1\/"},{"@type":"ListItem","position":3,"name":"Which one of the following devices is non-ohmic ?"}]},{"@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\/87541","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=87541"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/87541\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=87541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=87541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=87541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}