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

question 11

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 center of the square?

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

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Definitions:

Oligopoly

A business environment where only a few enterprises have strong dominance in controlling market prices and the competitive landscape.

Marginal Cost

The monetary cost of fabricating one more unit of a product or service.

Marginal Revenue Curve

A graphical representation showing how marginal revenue varies with changes in quantity sold.

Kinked

Often relating to the kinked-demand curve seen in oligopolistic markets, where firms face a price elasticity that abruptly changes as prices increase or decrease.