NEET Physics Mathematical Tools Questions Solved

A ball of radius R carries a positive charge throughout its volume, such that the volume density of charge depends on distance r from the ball's centre as ρ=ρ01-rR, where ρ0 is a constant. Assuming the permittivity of ball to be one, find magnitude of electric field as a function of distance r, both inside  the ball. [This question is only for Dropper and XII batch]


2. ρ0(4rR-3r2)12ε0R 

3. ρ0(4rR-3r2)3ε0R

4. ρ0(4rR-5r2)3ε0R

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