Four Point Charges Are on the Rim of a Circle

question 57

Multiple Choice

Four point charges are on the rim of a circle of radius 10 cm.The charges are (in mC) +0.50,+1.5,-1.0,-0.50.If the electrical potential at the circle's center due to the +0.5 charge alone is 4.5 x 10⁴ V,what is the total potential at the center due to the four charges combined?

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

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Definitions:

Monomers

Small, single molecules that can join with other similar molecules to form polymers through chemical reactions.

Complex Carbohydrates

Carbohydrates composed of sugar molecules linked together in long, complex chains, playing crucial roles in energy storage and structure.

Polysaccharide

A carbohydrate molecule composed of long chains of monosaccharide units bound together by glycosidic linkages.

Monosaccharides

Monosaccharides are the simplest form of carbohydrates consisting of a single sugar molecule, such as glucose and fructose.