An Electron Is Accelerated from Rest Through a Potential Difference $3.75 \mathrm { kV }$

question 9

Multiple Choice

An electron is accelerated from rest through a potential difference of $3.75 \mathrm { kV }$ . It enters a region where a uniform 4.0-mT magnetic field is perpendicular to the velocity of the electron. Calculate the radius of the path this electron will follow in the magnetic field. $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } , m _ { \text {electron } } = \right.$ $9.11 \times 10 ^ { - 31 } \mathrm {~kg}$ )

• A) \(2.2 \mathrm {~cm}\)
• B) \(3.2 \mathrm {~cm}\)
• C) \(4.2 \mathrm {~cm}\)
• D) \(1.2 \mathrm {~cm}\)
• E) \(5.2 \mathrm {~cm}\)

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Definitions:

Stimulus Motives

Internal states that prompt inquisitive, exploratory, and seeking behaviors in the absence of physical need or emotional distress.

Maslow

Refers to Abraham Maslow, an American psychologist renowned for creating Maslow's hierarchy of needs, a theory of psychological health predicated on fulfilling innate human needs.

Higher Motives

Aspirations or desires that transcend basic physiological or safety needs, focusing instead on personal growth, fulfillment, and the well-being of others.

Drive Reduction Theory

A psychological concept that suggests motivation arises from the desire to reduce an uncomfortable internal state caused by unmet needs.