Answered: 13. Now assume a positive point charge…

13. Now assume a positive point charge Q starts at rest from the center of the ring and is given a slight nudge in the z direction. Find an expression for its speed when it is far from the ring.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

questions 13 and 14

A thin ring of radius R carries a uniform charge Q (assumed positive) as shown.
11. Find an expression for the electrostatic potential along the z-axis, V(z).
12. Now find the electric field along the z-axis and show that you get correct results
when you set z=0 and when z is large (but not infinite).
13. Now assume a positive point charge Q starts at rest from the center of the ring
and is given a slight nudge in the z direction. Find an expression for its speed when
it is far from the ring.
14. Instead of a charged ring, consider current I flowing clockwise from the point of
Hoi ds x ô
view of P. Using the Biot-Savart Law, dB =
find the magnetic field
along the z-axis.

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