{"id":246145,"date":"2022-09-10T09:00:08","date_gmt":"2022-09-10T03:30:08","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/question\/an-electric-dipole-of-moment-p-is-placed-normal-to-the-lines-of-force-of-a-uniform-electric-intensity-e-then-the-work-done-in-deflecting-it-through-an-angle-of-180-i\/"},"modified":"2022-09-10T09:00:08","modified_gmt":"2022-09-10T03:30:08","slug":"an-electric-dipole-of-moment-p-is-placed-normal-to-the-lines-of-force-of-a-uniform-electric-intensity-e-then-the-work-done-in-deflecting-it-through-an-angle-of-180-i","status":"publish","type":"questions","link":"https:\/\/infinitylearn.com\/surge\/question\/physics\/an-electric-dipole-of-moment-p-is-placed-normal-to-the-lin\/","title":{"rendered":"An electric dipole of moment \u2018p\u2019 is placed normal to the lines of force of a uniform electric intensity E, then the work done in deflecting it through an angle of\u00a0180\u00b0\u00a0is"},"content":{"rendered":"","protected":false},"author":1,"template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"An electric dipole of moment \u2018p\u2019 is placed normal to the lines of force of a uniform electric intensity E, then the work done in deflecting it through an angle of\u00a0180\u00b0\u00a0is","custom_permalink":"question\/physics\/an-electric-dipole-of-moment-p-is-placed-normal-to-the-lin\/"},"categories":[],"acf":{"question":"

An electric dipole of moment \u2018p\u2019 is placed normal to the lines of force of a uniform electric intensity E, then the work done in deflecting it through an angle of 180<\/mn>\u00b0<\/mo><\/math> is<\/p>","options":[{"option":"

pE<\/p>","correct":false},{"option":"

+2pE<\/p>","correct":false},{"option":"

-2pE<\/p>","correct":false},{"option":"

zero<\/p>","correct":true}],"solution":"

Here,<\/p>

\u03b8<\/mi>1<\/mn><\/msub>=<\/mo>90<\/mn>o<\/mi><\/msup> <\/mspace>\u03b8<\/mi>2<\/mn><\/msub>=<\/mo>90<\/mn>o<\/mi><\/msup>+<\/mo>180<\/mn>o<\/mi><\/msup> <\/mspace>=<\/mo>270<\/mn>o<\/mi><\/msup><\/math><\/p>
<\/figure>

Work done is change in potential energy of the dipole<\/p>

=<\/mo>\u222b<\/mo>\u03b8<\/mi>1<\/mn><\/msub>=<\/mo>90<\/mn><\/mrow>\u03b8<\/mi>2<\/mn><\/msub>=<\/mo>270<\/mn><\/mrow><\/msubsup>p<\/mi>E<\/mi> <\/mo>sin<\/mi>\u03b8<\/mi> <\/mo>d<\/mi>\u03b8<\/mi> <\/mspace>=<\/mo>[<\/mo>-<\/mo>p<\/mi>E<\/mi> <\/mo>cos<\/mi>\u03b8<\/mi>]<\/mo><\/mrow>90<\/mn>270<\/mn><\/msubsup> <\/mo>=<\/mo>0<\/mn><\/math><\/p>","subject":""},"yoast_head":"\nAn electric dipole of moment \u2018p\u2019 is placed normal to the lines of force of a uniform electric intensity E, then the work done in deflecting it through an angle of\u00a0180\u00b0\u00a0is - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"An electric dipole of moment \u2018p\u2019 is placed normal to the lines of force of a uniform electric intensity E, then the work done in deflecting it through an angle of\u00a0180\u00b0\u00a0is\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/infinitylearn.com\/surge\/question\/physics\/an-electric-dipole-of-moment-p-is-placed-normal-to-the-lin\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"An electric dipole of moment \u2018p\u2019 is placed normal to the lines of force of a uniform electric intensity E, then the work done in deflecting it through an angle of\u00a0180\u00b0\u00a0is - 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