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Figura A Figare B

Figura A Figare B

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A ring with outer radius rb and inner radius ra (i.e. a disc with a hole, shown in Figure A) has auniform surface charge density σ. (a) Find the expression for electric field when rb≫x≫ra. Comment on your result. (b) Now consider a cylindrical shell of length lwith outer radiusrb and inner radius ra with totaluniform charge Q(see Figure B). Determine the electric field at a point a distance d from theright side of the cylinder.

Figua A Figare B
Transcribed Image Text:Figua A Figare B
(c) Find the expression for electric field when r,> xr. Comment on your result. (d) Now consider a cylindrical shell of length I with outer radius r, and inner radius r, with total uniform charge Q (see Figure B). Determine the electric field at a point a distance d from the right side of the cylinder. You may use the large r, limit result found in (b).
Transcribed Image Text:(c) Find the expression for electric field when r,> xr. Comment on your result. (d) Now consider a cylindrical shell of length I with outer radius r, and inner radius r, with total uniform charge Q (see Figure B). Determine the electric field at a point a distance d from the right side of the cylinder. You may use the large r, limit result found in (b).
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