PC A long silver rod of radius 3.5 cm has a charge of -5.2 on its surface. Here is a unit vector perpendicularly away from the axis of the rod as shown in the figure. cm directed (a) Find the electric field at a poils5 cm from the center of the rod (an outside point). E= P N E= (b) Find the electric field at a point 1.9 cm from the center of the rod (an inside point) N C

Physics for Scientists and Engineers: Foundations and Connections
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Author:Katz, Debora M.
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Chapter24: Electric Fields
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Problem 61PQ: A total charge Q is distributed uniformly on a metal ring of radius R. a. What is the magnitude of...
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A long silver rod of radius 3.5 cm has a charge of -5.2 on its surface. Here is a unit vector
C
cm
directed perpendicularly away from the axis of the rod as shown in the figure.
(a) Find the electric field at a poil5 cm from the center of the rod (an outside point).
E =
20
E=
N
(b) Find the electric field at a point 1.9 cm from the center of the rod (an inside point)
N
C
Think & Prepare
1. Is there a symmetry in the charge distribution? What kind of symmetry?
2. The problem gives the charge per unit length A. How do you figure out the surface charge density
a from A?
Transcribed Image Text:A long silver rod of radius 3.5 cm has a charge of -5.2 on its surface. Here is a unit vector C cm directed perpendicularly away from the axis of the rod as shown in the figure. (a) Find the electric field at a poil5 cm from the center of the rod (an outside point). E = 20 E= N (b) Find the electric field at a point 1.9 cm from the center of the rod (an inside point) N C Think & Prepare 1. Is there a symmetry in the charge distribution? What kind of symmetry? 2. The problem gives the charge per unit length A. How do you figure out the surface charge density a from A?
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