Consider a uniformly charged ring of radius R and charge +Q. What is the mag- nitude of the electric field outside the ring, a distance r from the center (in the same plane as the plane of the ring, as shown below)? R E=? (a) E = kQ/r² (b) E = kQ/R² %3D (c) E = 0 (d) E > 0, but the expression is more com- plicated than kQ/r².

Consider a uniformly charged ring of radius R and charge +Q. What is the mag- nitude of the electric field outside the ring, a distance r from the center (in the same plane as the plane of the ring, as shown below)? R E=? (a) E = kQ/r² (b) E = kQ/R² %3D (c) E = 0 (d) E > 0, but the expression is more com- plicated than kQ/r².

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter25: Gauss’s Law

Section: Chapter Questions

Problem 48PQ

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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

Consider a uniformly charged ring
of radius R and charge +Q. What is the mag-
nitude of the electric field outside the ring, a
distance r from the center (in the same plane
as the plane of the ring, as shown below)?
1.
R
E =?
(a) E = kQ/r2
(b) E = kQ/R?
(c) E = 0
(d) E > 0, but the expression is more com-
plicated than kQ/r?.

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