Current Density: a Proton Beam That Carries a Total Current

question 7

Multiple Choice

Current density: A proton beam that carries a total current of 1.3 mA has 10.0 mm diameter. The current density in the proton beam increases linearly with distance from the center. This is expressed mathematically as J(r) = J₀ (r/R) , where R is the radius of the beam and J₀ is the current density at the edge. Determine the value of J₀.

• A) 25 A/
• B) 6.2 A/
• C) 12 A/
• D) 17 A/

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Definitions:

Psychological Loneliness

A state of mind characterized by a significant discrepancy between desired and actual social relationships, leading to feelings of isolation.

Intrapersonal Loneliness

A state of feeling alone and isolated due to a lack of close or meaningful personal relationships.

Interpersonal Loneliness

A feeling of isolation or lack of connection experienced at the level of personal interactions and relationships.

Intimate Relationships

Deeply personal connections between individuals characterized by emotional closeness, love, trust, and mutual support.