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1 4:34
Consider an insulating cylindrical shell of inner radius 3a and outer radius 5a, carrying a polariza-
tion P = Cr, where C is a constant and r is the radial distance from the centre of the shell. The elec-
tric field at a distance r = 4a from its centre is:
(a) E = Ō
4Ca
(b) E =
2Ca
(c) E = -
C
(d) E = --Ê
(e) E =
(f) None of the listed answers

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