A Proton Beam That Carries a Total Current of 1

question 27

Multiple Choice

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:

Messaging

Category of communication system in which users’ messages appear on each other’s screens instantly, without the need to be opened individually, as with email; includes phone-based text messaging, conventional instant messaging, and workplace messaging.

Online Chat Systems

Digital platforms that enable real-time text-based communication between users.

Centralized Control Mechanisms

Systems or procedures designed to manage or regulate activities from a single, central point of authority.

Speed

The rate at which something moves or operates, often measured in terms of distance covered or tasks completed over a given time period.