The Electric Potential at the Origin of an Xy-Coordinate System

question 43

Multiple Choice

The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point. What is the electric potential energy of this charge at the origin?

• A) -3.2 × 10^-4 J
• B) 3.2 × 10^-4 J
• C) -40 μJ
• D) 40 μJ
• E) 8.0 μJ

---

Definitions:

Rubber Covering

A protective layer made of rubber material, used to enhance grip, insulation, or waterproofing of objects.

Pneumothorax

The presence of air or gas in the cavity between the lungs and the chest wall, causing collapse of the lung.

Lungs Collapse

A medical condition, also known as pneumothorax, where air enters the pleural space, causing the lung to collapse away from the chest wall.

Lungs Inflate

The process of the lungs expanding with air during breathing.