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Grade 12Electrostatics

why electric field due to a solid sphere is in radial direction.
Two rings each of radius r are coaxially placed a distance r metres apart.if q1 and q2 be
respectively the charges uniformly spread on the rings the work done in moving a charge q from the centre of one ring to that of other

Profile image of vinayak
11 Years agoGrade 12
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1 Answer

Profile image of sarim khan
11 Years ago
1st part :you can probably say that it is a symmetrical figure so the tangential opposite components ancel each other .
2nd part: it is one of the questions from irodov. you can do it as follows(only steps)
1.find the potential of the ring intially that is KQ/(R^2+r^2)
it will be due to the two above rings .
2.find the final potential ,which will be again due to two rings .
3.work done=pot energy final-pot energy initial.

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