IIT JAM
Meena Asked a Question
May 5, 2021 3:58 pmpts 2 pts
  • IIT JAM
  • Physics (PH)

Electric field due to a charged sphere

I used the general formula of Electric field due to uniformly charged sphere and substituted charge = volume charge density x volume) and then volume charge density (row) = kr . I got, for rR, E inversely proportional to r .... but in ans it's given E inversely proportional to r^2 .. I have also attached how I solved.. could someone tell me where I hve misunderstood *correct option A*
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  • Som shekhar sharma thankyou
    use integral formula for calculation taking dq element at distance r then integrate you will get correct option. You formula is only valid for constant charge density. hope you und...
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    Meena
    could u explain more on constant charge density... and how in this case charge density is not constant?
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