A Proton Moves in a Constant Electric Field from Point

question 24

Multiple Choice

A proton moves in a constant electric field from point A to point B. The magnitude of the electric field is 6.4 × 10⁴ N/C; and it is directed as shown in the drawing, the direction opposite to the motion of the proton. If the distance from point A to point B is 0.50 m, what is the change in the proton's electric potential energy, EPE_A - EPE_B?

• A)-2.4 × 10^-15 J
• B)-3.2 × 10^-15 J
• C)+1.2 × 10^-15 J
• D)-5.1 × 10^-15 J
• E)-1.8 × 10^-15 J

---

Definitions:

Activity-Based Costing

A costing method that assigns overhead and indirect costs to related products and services based on the activities that generate the costs.

Direct Labor-Hours

It measures the total hours worked by employees directly involved in manufacturing a product.

Activity-Based Costing

A method of costing that identifies activities in an organization and assigns the cost of each activity to all products and services according to the actual consumption.

Activity Rates

Predetermined rates used in activity-based costing to allocate costs to products or services based on specific activities undertaken.