Can you explain how to solve this problem thanks in advance

These are separate questions by the way and the answers are given

What is the difference btw the direction of net force vs direction eclectic field How can I calculate each of them.

Can you draw the vector? it might be helpful to understand it thanks in advance

2) A square of side length 1 cm has charges at three of its corners as shown. There is nothing located at the bottom right + r j! ................ _ \"[1 corner of the square. Let Q=1uC. .__ .- The direction of the electric field at the bottom right corner of the square is in which quadrant? I I I I I I I . A. Up and Left . : I B. Up and Right I : C. Down and Left : I 1 cm D. Down and Right I : I . ' I I I I E. It is Zero Consider the total net force on the charge -20. at the top right corner of the square. In which quadrant does it U B -------- .- .- ...... 0 point? A. Up and Left B. Up and Right C. Down and Left D. Down and Right E. It is Zero +3qiii. Consider the total net force due to the other three charges on the charge -q which is located at the top of this arrangement. In which quadrant does the force on this charge -q point? A. Up and Right B. Up and Left C. Down and Left D. Down and Right E. It is Zero