The surface charge density of sphere of radius r is sigma. It is placed at a point A. The electric field intensity at B due to this sphere is E. Another charged sphere os radius 2r is placed at B. If the intensity at the centre of A and B is E/2 then the surface charge density of B is

The surface charge density of sphere of radius r is sigma. It is place

1.	The surface charge density of sphere of radius r is sigma. It is placed at a point A. The electric field intensity at B due to this sphere is E. Another charged sphere os radius 2r is placed at B. If the intensity at the centre of A and B is E/2 then the surface charge density of B is
Answer» `(SIGMA)/(2)` `-(sigma)/(2)` `(-7sigma)/(32)` `(7sigma)/(32)` ANSWER :D

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The surface charge density of sphere of radius r is sigma. It is placed at a point A. The electric field intensity at B due to this sphere is E. Another charged sphere os radius 2r is placed at B. If the intensity at the centre of A and B is E/2 then the surface charge density of B is

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