Four charges of equal magnitude are placed so there is one charge at each corner of a square with each side having length d. The charge at the bottom right corner is +q. The charges at the other three corners are each q.  (see attached) In what direction is the new electric field at the exact center of the square because of the four charges.   a. Toward top left corner b. Toward top right corner c. Toward bottom left corner d. Toward bottom right corner e. Net electric field not zero but not exactly in any of those directions f. None of these. Net field is zero

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