How Much Work Must We Do on an Electron to Move

question 101

Multiple Choice

How much work must we do on an electron to move it from point $A$ , which is at a potential of $+ 50 \mathrm {~V}$ , to point $\mathrm { B }$ , which is at a potential of $- 50 \mathrm {~V}$ , along the semicircular path shown in the figure? Assume the system is isolated from outside forces. $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

• A) \(1.60 \times 10 ^ { - 17 } \mathrm {~J}\)
• B) \(- 1.60 \times 10 ^ { - 17 } \mathrm {~J}\)
• C) \(1.6 \mathrm {~J}\)
• D) \(- 1.6 \mathrm {~J}\)
• E) This cannot be determined because we do not know the distance traveled.

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Definitions:

Vascularity

The degree or extent of blood vessels within a given tissue, often indicating the level of blood flow or potential for healing.

Peripheral Vasoconstriction

The narrowing of blood vessels in the body's extremities to preserve core body temperature and blood flow to vital organs.

Venous Pooling

The accumulation of blood in the veins, particularly in the lower limbs, due to impaired venous return to the heart.

Arterial Perfusion

The process of blood being supplied to tissues and organs through the arteries, crucial for delivering oxygen and nutrients to cells.