Three Equal Negative Point Charges $- q$ Are Placed at Three of the Corners of a Square

question 4

Multiple Choice

Three equal negative point charges $- q$ are placed at three of the corners of a square of side $d$ as shown in the figure. Which one of the arrows shown represents the direction of the net electric field at the vacant corner of the square?

• A) \(\mathrm { A }\)
• B) \(B\)
• C) \(\mathrm { C }\)
• D) \(\mathrm { D }\)