For what charge q1 will charge q2 be in static equilibrium?

Question

Question

In the figure below, the charge in the middle is Q = -3.1 nC. For what charge q1 will charge q2 be in static equilibrium?

Answer 1

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Answer #1

solution: the diagram is not given i am taking this from some other source if this is the case then,

For q2 to be in static equilibrium, the field at 2 must be zero.

So k*q₁/r₁^2 = k*q₃/r₃^2 ;r₁ =.20 m and r₃ =.10 m

so q1 = (r₁^2/r₃^2)*q3 =(( 0.20^2)/(.10^2))*(3.1nC) = 12.4nC and it must be positive ans

Answer 2

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