A very long metal cylinder has inner and outer radii of a and b, respectively. As shown in the figure, a uniformly charged thin wire lies along the axis of the axis of the cylinder. Linear charge density of the wire is lambda. What is the potential difference V(a/2)-V(2b)?

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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.