Electric field
need help in 9, is there is like a formula used here of math? Gp if i am not wrong

5 Replies
@Gyro Gearloose
Note for OP
+solved @user1 @user2...
to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.yyeah thata gp
E=Kq(1+1/4 +1/16+ 1/64....)
sum of infinite gp is a/1-r
here 1 is a and r is 1/4
so tht is 4/3
@Sephrina
oh ok that made sense
thnks
+solved @Shreyaaa~
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