A Disk with a Uniform Positive Surface Charge Density Lies

question 21

Multiple Choice

A disk with a uniform positive surface charge density lies in the x-y plane, centered on the origin.The disk contains 2.5 x 10^-6 C/m² of charge, and is 7.5 cm in radius.What is the electric field at z = 15 cm?

• A)30 N/C
• B)300 N/C
• C)3000 N/C
• D)3.0 x 10⁴ N/C
• E)3.0 x 10⁷ N/C

---

Definitions:

Networking

The process of interacting with others to exchange information and develop professional or social contacts.

Role Models

Individuals admired for their ways of living or success, who influence others by setting good examples.

Arrogance

Characterized by or revealing an exaggerated sense of one’s own importance or abilities.

Self-Selected Stakeholder

A person who chooses themselves to have an interest or investment in an initiative or project without being appointed or elected.