If three point charges are placed at the vertices of an isosceles right angled triangle as shown in the figure. Which of the numbered vectors coincides in direction with net electric field at the mid point $m$ of the hypotenuse ?

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Solution

The correct option is C 3
Electric field due to $Q_{2}$ & $Q_{3}$ gets cancelled due to symmetry.
So the resultant at $m$ has electric field only due to $Q_{1}$ i.e along 3

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If three point charges are placed at the vertices of an isosceles right angled triangle as shown in the figure. Which of the numbered vectors coincides in direction with net electric field at the mid point m of the hypotenuse ?

The correct option is C 3Electric field due to Q2 & Q3 gets cancelled due to symmetry. So the resultant at m has electric field only due to Q1 i.e along 3

If three point charges are placed at the vertices of an isosceles right angled triangle as shown in the figure. Which of the numbered vectors coincides in direction with net electric field at the mid point $m$ of the hypotenuse ?

The correct option is C 3
Electric field due to $Q_{2}$ & $Q_{3}$ gets cancelled due to symmetry.
So the resultant at $m$ has electric field only due to $Q_{1}$ i.e along 3