3. A current density of J= ar, where a is a constant, flows through a cylinder of radius R along the axis of the cylinder. Derive an expression for the magnetic field when (a) r< R and (b) r> R.
3. A current density of J= ar, where a is a constant, flows through a cylinder of radius R along the axis of the cylinder. Derive an expression for the magnetic field when (a) r< R and (b) r> R.
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Transcribed Image Text:3. A current density of J= ar, where a is a constant, flows through a cylinder of
radius R along the axis of the cylinder. Derive an expression for the magnetic
field when
(a) r< R and
(b) r> R.
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