The Three Point Charges Shown in the Figure Form an Equilateral

question 49

Multiple Choice

The three point charges shown in the figure form an equilateral triangle with sides $4.9 \mathrm {~cm}$ long. What is the electric potential (relative to infinity) at the point indicated with the dot, which is equidistant from all three charges? Assume that the numbers in the figure are all accurate to two significant figures. $\left( k = 1 / 4 \pi \varepsilon _ { 0 } = 9.0 \times 10 ^ { 9 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { C } ^ { 2 } \right)$

• A) \(1900 \mathrm {~V}\)
• B) \(1300 \mathrm {~V}\)
• C) \(640 \mathrm {~V}\)
• D) \(0.00 \mathrm {~V}\)

---

Definitions:

Dermal Tissue

Dermal tissue is a protective outer layer of cells in plants, equivalent to skin in animals, that serves as the first defense barrier against the environment.

Mesophyll Tissue

The inner tissue of a leaf, containing many chloroplasts where photosynthesis takes place.

Photosynthesis

The process by which green plants, algae, and certain bacteria transform light energy into chemical energy, producing oxygen and glucose from carbon dioxide and water.

Nodes

Points of intersection or branching, such as within a network, or specific regions on a plant stem where leaves are attached.