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 point A because of the four charges.   a. Up (+y) b. Down (-y direction) c. Right (+x direction)  d. Left (-x direction) e. Some combo of the above. f. None of these. Net field is zero

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Q: uniform electric field

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.