The electric field intensity at distances r and 2r from a long, uniformly charged
straight wire are E1 or E2 respectively. The ratio of E1 and E2 will be?
(A) 1/2 (B) 2/1 (C) 1/1 (D) None of these

Answer is below

  • -1
As you know that electric field due to infinitely long charged wire is
=Q/(2??r)
So E1=q/2??r
And E2=q/2??(2r)
So ratio i.e E1/E2 is 2:1
  • -1
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