Four electrical charges are arranged on the corners of a 10 cm square as shown. What would be the direction of the resulting electric field at the center point P?

E1=E4=2E2=2E3Resultant of E4 and E2 is towards fourth charge.Resultant of E1 and E3 is towards third charge.Now, horizontal components will be canceled, and net field will be upward. Angle between them =90 and Enet=2Ecosθ2=2Ecos902=2E upwards