10 +vely charged particals r kept fixed on xaxis at pts. x=10cm ,20cm,30cm ,.......100cm . the first partical has charge 1x10^ -8 c,2nd 8x10^ -8 c ,3rd 27x10^ -8c & so on .the 10th partical has 1000x10^ -8. find the mag. of ele. force acting on 1c charge placed at origine ? Ans -4.95x10^5 N. plz give details ,i'm in herry.

Dear Priya,

Force=∑(1/4πε₀)(q₁q₂/r²)=(1/4πε₀)∑(from n=1 to n=10)((n³*10^-8)/(n/10)²)

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