Five Equal Negative Charges Are Uniformly Spaced in a Semicircular

question 22

Multiple Choice

Five equal negative charges are uniformly spaced in a semicircular arc of radius with its center at the origin. The charges positions in polar coordinates are given by , where the values of are . At the position in the 4th quadrant, which statement best describes the direction of the resulting electric field?

• A) The direction is that of a 4th quadrant angle.
• B) The direction is that of a 3rd quadrant angle.
• C) The direction is that of a 1st quadrant angle.
• D) The direction is that of a 2nd quadrant angle.

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