A very long insulating cylinder of radius R=20 cm has a volume charge density ca which depends on the radial distance "r", according to: p=po(a-r/b) where po-6 nC/m³, a=22, b=10cm, are constant. (k=9●10⁹ Nm²/C²) I) Find the magnitude of the electric field at a distance r=10 cm from the axis of the cylinder.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.