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doubt in emf Printed From: One Stop GATE Category: GATE Technical Discussions Forum Name: GATE ECE Forum Discription: General Technical Discussions, Queries, doubts etc. for GATE in ECE. URL: http://forum.onestopgate.com/forum_posts.asp?TID=550 Printed Date: 13Feb2025 at 7:13pm Topic: doubt in emf Posted By: manju Subject: doubt in emf Date Posted: 22Feb2007 at 2:58pm  Hi, Am not well with emf pls help me with this prob.. *In a non magnetic medium peak value of electric field is 12v/m. if relative permittivity is 100/Sq(pi) ,time avg power per Sq m is a) 6 Sq pi W b) .6/ Sq Pi w c) 6/ Sq Pi W d) 12/ Sq Pi W Replies: Posted By: balu Date Posted: 22Feb2007 at 3:01pm  time avg power per Sq m is =E*E/2*n where n=intrinsic impedance n=intrinsic impedance =120*pi*pi/10=12*pi*pi. so Pavg=(12)^2/(2*12*pi*pi)=6/pi*pi W so ans is C)6/ Sq Pi W .Correct me if i am wrong anywhere.

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