Imagine Four Equal Positive Charges, Q, Placed on Points of a Circle

question 17

Multiple Choice

Imagine four equal positive charges, q, placed on points of a circle of radius r at the 3, 6, 9, and 12 o'clock positions. Coulomb's constant is k. The magnitude of the electric field at the center of the circle is given by

• A) 4 kq/r.
• B) 4 kq/r².
• C) kq/r.
• D) kq/r².
• E) zero.

---

Definitions:

Capital Goods

Long-term assets used in the production of goods and services, such as machinery, buildings, and equipment.

Quality

The degree to which a product, service, or process meets predefined criteria or expectations, often related to consistency, reliability, and performance.

On-The-Job Experience

Practical and valuable knowledge or skills gained through actual work performed, rather than theoretical studies or classroom learning.

Labor Productivity

A gauge of economic productivity that contrasts the total output of goods and services with the labor hours invested in creating those outputs.