+Q -Q Vector En Vector EB c. Vector Ec d. The electric field at that point is ze

Question

+Q -Q Vector En Vector EB c. Vector Ec d. The electric field at that point is zero. 21. Four charges are located on the corners of a square as shown in the drawing, what is the direction of the net electric field at the point labeled P7 -29 a. toward the upper left corner of the square b, toward the middle of the right side of the square c, toward the middle of the bottom side of the square d, toward the lower right corner of the square e. There is no direction. The electric field at P is zero NC.

Explanation / Answer

we know that the electric field lines of the positive charge is radially out ward

   and for the negative charge the electric field lines are radially inward

we know that E = kq/r^2

the electric field at the centre of the square is equidistant from all the charges so

here the field direction depends on the magnitude of the charges

due to +2q and +q c charges the net electric field is along the lower right corner of square and

due to -2q and -q c charges the net electric field is along the lower left corner charge .

so the net charge is toward the middle of the bottom side of the square ---------------->>>>>Answer

answer is option C

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