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Asked by anshuman.anshuman090 30th October 2019, 12:24 PM
To get the velocity of charge at surface of charged sphere, we equate the change in potential energy of charge from point P
to a point at surface of spher to change in kinetic energy of charge from point P to the point on the surface of sphere.

change in potential energy  ΔU is given by

.............................(1)
hence velocity at a point on surface of charged sphere :-  ΔU = (1/2)mv2 or velociy
---------------------------------------------------------------

Change in potential from a point on surface of charged sphere to centre of sphere is calculated as follows

Electric field Er = - [ qQ / (4πεo) ] ( r/R3)
potential difference
Hence if we equate change in potential energy to change in kinetic energy

Hence velocity of charge at centre ,

Answered by Expert 1st November 2019, 1:48 PM
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Tags: velocity