A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.40 µA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at speed 2.60 x 10“ m/s a distance d above the wire (i.e. z = d). (a) What is the direction of the magnetic field of the wire at the position of the proton? --Select-- v direction (b) What is the direction of the magnetic force acting on the proton? ---Select--- v direction (c) Explain why the direction of the proton's motion doesn't change.

A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.40 µA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at speed 2.60 x 10“ m/s a distance d above the wire (i.e. z = d). (a) What is the direction of the magnetic field of the wire at the position of the proton? --Select-- v direction (b) What is the direction of the magnetic force acting on the proton? ---Select--- v direction (c) Explain why the direction of the proton's motion doesn't change.

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

Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.

Question

A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.40 µA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at speed
2.60 x 10* m/s a distanced above the wire (i.e. z =
d).
(a) What is the direction of the magnetic field of the wire at the position of the proton?
---Select--- V direction
(b) What is the direction of the magnetic force acting on the proton?
---Select--- V direction
(c) Explain why the direction of the proton's motion doesn't change.
This answer has not been graded yet.
(d) Using Newton's second law, find a symbolic expression for d in terms of the acceleration of gravity g, the proton mass m, its speed v, charge q, and the current I. (Use any variable or
symbol stated above along with the following as necessary: µ, and r. Do not substitute numerical values; use variables only.)
d =
(e) Find the numeric answer for the distance d using the results of part (d).
cm

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