The figure below shows a portion of an infinitely long, concentric cable in cross section. The inner conductor has a linear charge density of λ = 6.20 nC/m and the outer conductor has no net charge. (a) Find the electric field for all values of R, where R is the perpendicular distance from the common axis of the cylindrical system. (Use the following as necessary: R. Assume R is in meters and E is in N/C. Do not include units in your answer.) E(R < 0.015 m)=___________ E(0.015 m < R < 0.045 m)=_____________ E(0.045 m < R < 0.065 m)=______________ E(R > 0.065 m)=_______________   (b) What are the surface charge densities on the inside and the outside surfaces of the outer conductor? σinside=_______________ nC/m^2 σoutside= ________________ nC/m^2

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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.