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Three point charges - q, q and q are placed on a straight line with distance d between charges as shown .find the magnitude of electric field at the point P in the configuration shown which is at a distance a from middle charge q in the system provided that a>>d.take 2qd=p.

Three point charges - q, q and q are placed on a straight line with distance d between charges as shown .find the magnitude of electric field at the point P in the configuration shown which is at a distance a from middle charge q in the system provided that a>>d.take 2qd=p.

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Grade:12

1 Answers

Vikas TU
14149 Points
8 years ago
E at point P->
=> due to -ve cahrge => kQ/(a^2 +d^2) {attracting}
=> due to +ve charges => KQ/a^2 + kQ/(a^2+d^2)
Now components them in horizontal and vertcial direcn. after finding the angles in triangle.
and the n write final electric field simply.

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