A solid cylinder of radius R and length L carries a uniform charge density 0 between r 0 and r R and a positive charge density of equal magnitude, 0 , between r R and r R (Figure) The cylinder rotates about its axis with angular velocity Derive an expression for the magnetic moment of the cylinder ...

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A solid cylinder of radius R?and length L?carries a uniform charge density ??= ?? 0 between r?=

Question:

A solid cylinder of radius R?and length L?carries a uniform charge density ??= ??₀ between r?= 0 and r = ? R?and a positive charge density of equal magnitude, +?₀, between r = ?R and r = R (Figure). The cylinder rotates about its axis with angular velocity ?. Derive an expression for the magnetic moment of the cylinder.