Hello everyone my name is Sarkar Erfan Uhana and I am currently a first year BSMS student of IISER Kolkata .
This question was solved by Aritra Paul , IISER Kolkata (JEE Main 99.55% iler)
Special thanks to Debjit Bhattacharjee (IISER Kolkata )
Link of the lecture note : drive.google.com/file/d/1wug9...
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An electric field,
E=E0(1-r/R)
exists in a region such that it passes through a circle of radius R normally. Find the flux passing through the plane of the circle. Here, r is the distance from the center of the circle