A long, straight wire carries a current I as shown in the figure. Which of the following statements is true regarding the magnetic field due to the wire at point P ?The magnitude is proportional to I but does not depend on r.The magnitude is proportional to I /r and the direction is into the page.The magnitude is proportional to I /r^2 and the direction is out of the page.The magnitude is proportional to I /r^2 and the direction is into the page.The magnitude is proportional to I /r and the direction is out of the page. P

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College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Introduction

Section: Chapter Questions

Problem 45P: In Figure P1.49, find (a) the side opposite , (b) the side adjacent to . (c) cos , (d) sin , and (c)...

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A long, straight wire carries a current I as shown in the figure. Which of the following statements is true regarding the magnetic field due to the wire at point P ?

The magnitude is proportional to I but does not depend on r.
The magnitude is proportional to I /r and the direction is into the page.
The magnitude is proportional to I /r^2 and the direction is out of the page.
The magnitude is proportional to I /r^2 and the direction is into the page.
The magnitude is proportional to I /r and the direction is out of the page.

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