Four Point Charges Are on the Rim of a Circle $\mu$

question 19

Multiple Choice

Four point charges are on the rim of a circle. The charges are (in $\mu$ C) +0.50, +3.0, -1.0, -0.50. If the electrical potential at the circle's center due to the +0.5 charge alone is 4.5 * 10⁴ V, what is the total potential at the center due to the four charges combined?

• A) "18 * 10⁴ V"
• B) "4.5 * 10⁴ V"
• C) "zero"
• D) "-4.5 *10⁴ V"

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