22.15 (a) A conducting sphere has charge Q and radius R. If the electric field of the sphere at a distance r = 2R from the center of the sphere is 1400N/C, what is the electric field of the sphere at r = 4R? (b) A very long conducting cylinder of radius R has charge per unit length I. Let r be the perpendicular distance from the axis of the cylinder. If the electric field of the cylinder at r = 2R is 1400N/C, what is its electric field at r = 4R? (c) A very large uniform sheet has a surface charge density s. If the electric field of the sheet has a value of 1400N/C at a perpendicular distance d from the sheet, what is the electric field of the sheet at a distance 2d from the sheet?
22.15 (a) A conducting sphere has charge Q and radius R. If the electric field of the sphere at a distance r = 2R from the center of the sphere is 1400N/C, what is the electric field of the sphere at r = 4R? (b) A very long conducting cylinder of radius R has charge per unit length I. Let r be the perpendicular distance from the axis of the cylinder. If the electric field of the cylinder at r = 2R is 1400N/C, what is its electric field at r = 4R? (c) A very large uniform sheet has a surface charge density s. If the electric field of the sheet has a value of 1400N/C at a perpendicular distance d from the sheet, what is the electric field of the sheet at a distance 2d from the sheet?
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Transcribed Image Text:22.15 (a) A conducting sphere has charge Q and
radius R. If the electric field of the sphere at a
distance r = 2R from the center of the sphere is
1400N/C, what is the electric field of the sphere
at r = 4R? (b) A very long conducting cylinder of
radius R has charge per unit length I. Let r be the
perpendicular distance from the axis of the
cylinder. If the electric field of the cylinder at r =
2R is 1400N/C, what is its electric field at r = 4R?
(c) A very large uniform sheet has a surface
charge density s. If the electric field of the sheet
has a value of 1400N/C at a perpendicular
distance d from the sheet, what is the electric
field of the sheet at a distance 2d from the
sheet?
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