1. Particles 1, with charge q1 and 2, with a charge q2 are onthe x axis, with pa

Question

1. Particles 1, with charge q1 and 2, with a charge q2 are onthe x axis, with particle 1 at x = a with and particle 2 at x = –2a. For the net force on athird charged particle, at the origin to be zero q1 and q2 must be related by q2=: A) 2q1 B) 4q1 C) –2q1 D) –4q1 E) –q1/4 1. Particles 1, with charge q1 and 2, with a charge q2 are onthe x axis, with particle 1 at x = a with and particle 2 at x = –2a. For the net force on athird charged particle, at the origin to be zero q1 and q2 must be related by q2=: A) 2q1 B) 4q1 C) –2q1 D) –4q1 E) –q1/4

Explanation / Answer

Particles 1, with charge q1 and 2, with a charge q2 are on thex axis, with particle 1 at x = a with and particle 2 at x = –2a. For the net force on athird charged particle, at the origin to be zero.
Then the net force acting on the third charge at the origin iszero.
So kq1 / a = kq2/2a
        q1 =q2 / 2
          q2 = 2q1

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