A Conducting Sphere of Radius 20 Cm Is Charged to a Potential

question 67

Multiple Choice

A conducting sphere of radius 20 cm is charged to a potential of 1.0 $\times$ 10⁶ volts.What is the charge on its surface?

• A) 22 \(\mu\)C
• B) 4.4 \(\mu\)C
• C) 4.7 mC
• D) 9.0 nC
• E) 16 mC

---

Definitions:

Hemostasis

Arrest of bleeding.

Coagulation

The process by which blood changes from a liquid to a gel, forming a clot, to stop bleeding and begin repair of the damaged vessel.

Erythropoiesis

The production of red blood cells (erythrocytes) in the bone marrow, a process regulated by the hormone erythropoietin.

Macrophages

Large white blood cells that are part of the immune system, engulfing and digesting cellular debris, foreign substances, microbes, and cancer cells.