Question: The current density in a particle beam with circular cross section of radius a points along the beam axis with a magnitude that decreases linearly

The current density in a particle beam with circular cross section of radius a points along the beam axis with a magnitude that decreases linearly from J₀ at the center (r = 0) to half that value at the edge (r = a). Find an expression for the total current in the beam.

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Current density is j0 at r 0 and j02 at r a and decreases ... View full answer

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