A Charge of +3

question 50

Multiple Choice

A charge of +3.0 μC is distributed uniformly along the circumference of a circle with a radius of 20 cm. How much external energy is required to bring a charge of 25μC from infinity to the center of the circle?

• A) 5.4 J
• B) 3.4 J
• C) 4.3 J
• D) 2.7 J
• E) 6.8 J

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Definitions:

Economic Profit

The difference between the total revenue generated by a business and its total costs, including both explicit and implicit costs.

Market Price

The price at which a good or service is offered in the marketplace, determined by supply and demand dynamics.

Total Product

The total quantity of goods or services produced by a firm or economy at a given time.

Profit-Maximizing Output

The level of production that maximizes a firm’s profits, determined by the intersection of marginal cost and marginal revenue.