Problem 2: A coaxial cable is used to send video signals and other data streams from one device to another. Usually the inner wire carries the signal. It is surrounded by a plastic sheath of material, and on the outside of that is a sheath of metal foil, which is "grounded". If the diameter of the inner conducting wire is 1 mm, and the value of the electric field 2 mm from the center of the wire has a magnitude of E= 10,000 N/C, what is the value of the charge per unit length of the inner wire? (Hint: Equate the flux leaving the surface of the wire to that passing through a cylinder of radius 2 mm.)
Problem 2: A coaxial cable is used to send video signals and other data streams from one device to another. Usually the inner wire carries the signal. It is surrounded by a plastic sheath of material, and on the outside of that is a sheath of metal foil, which is "grounded". If the diameter of the inner conducting wire is 1 mm, and the value of the electric field 2 mm from the center of the wire has a magnitude of E= 10,000 N/C, what is the value of the charge per unit length of the inner wire? (Hint: Equate the flux leaving the surface of the wire to that passing through a cylinder of radius 2 mm.)
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