Three equal negative point charges are placed at three of the comers of a square

Question

Three equal negative point charges are placed at three of the comers of a square of side d as shown in the figure. Which of the arrows represents the direction of the net electric field at the center of the square? A) A B)B QC D)D E) The field is equal to zero at point P. The figure shows three electric charges labeled Q_1, Q_2, Q_3, and some electric field lines in the region surrounding the charges. What are the signs of the three charges? A) Q_1 is negative, Q_2 is positive, Q3 is negative. B) Q is positive, Q2 is negative, Q3 is positive. Q Qi is positive, Q2 is positive, Q3 is negative. D) All three charges are negative. E) All three charges are positive.

Explanation / Answer

6)

C) will be the answere

7)

B) Q1 is positive , Q2 is negative ,Q3 is positive

because the direction of the electric field lines is from postive to negative.

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