A solid sphere of radius R has a charge density, given by p(r)=p|-1= where r is the radial coor- R dinate and po,a and R are positive constants. If the magnitude of the electric field at r=R/2 is 1.25 times that at r = R, then the value ofa is (a) 2 (b) 1 ()

A solid sphere of radius R has a charge density, given by p(r)=p|-1= where r is the radial coor- R dinate and po,a and R are positive constants. If the magnitude of the electric field at r=R/2 is 1.25 times that at r = R, then the value ofa is (a) 2 (b) 1 ()

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter6: Gauss's Law

Section: Chapter Questions

Problem 55P: The electric field 10.0 cm from the surface of a copper ball of radius 5.0 cm is directed toward the...

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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.

Question

A solid sphere of radius R has a charge density, given by p(r)=p|-1=
where r is the radial coor-
R
dinate and po,a and R are positive constants. If the magnitude of the electric field at r=R/2 is 1.25
times that at r = R, then the value ofa is
(a) 2
(b) 1
()

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