Three Charged Particles Are Positioned in the Xy Plane: a 50-NC

question 71

Multiple Choice

Three charged particles are positioned in the xy plane: a 50-nC charge at y = 6 m on the y axis, a −80-nC charge at x = −4 m on the x axis, and a 70-nc charge at y = −6 m on the y axis. What is the electric potential (relative to a zero at infinity) at the point x = 8 m on the x axis?

• A) +81 V
• B) +48 V
• C) +5.8 V
• D) −72 V
• E) −18 V

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Definitions:

Same Elasticity

A condition where two or more products have identical responsiveness in quantity demanded or supplied when there is a change in price.

Perfectly Elastic Demand

Refers to a market situation where consumers are willing to purchase any quantity of the product at a certain price, but no quantity at any other price.

Very Elastic Demand

A situation where the quantity demanded of a product changes significantly due to changes in its price.

Perfectly Inelastic Demand

A situation where the demand for a product remains constant regardless of changes in its price.