Charge Q is distributed uniformly throughout an insulating sphere of Radius of R the magnitude of electric field at a point 2R/3 from centre is?
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Consider a hypothetical sphere of radii r as shown in the figure.
Total charge enclosed by hypothetical sphere is Qen=3Q
By Gauss's law, E.4πr2=ϵ0Qen=ϵ03Q
or E=4πϵ0r23Q
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Above is hour answer
see the answer of karamveer
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