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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![**Finding the Magnetic Dipole Moment \( \vec{\mu} \) of the Current Loop**
Consider the problem statement:
Find the magnetic dipole moment \( \vec{\mu} \) of the current loop given in the figure.
**Options:**
A) \( I a^2 (-\hat{i} - \hat{j} + \hat{k}) \)
B) \( I a^2 \left( \frac{1}{\sqrt{2}} \hat{j} - \frac{1}{\sqrt{2}} \hat{k} \right) \)
C) \( I a^2 \left( -\hat{i} - \frac{1}{\sqrt{2}} \hat{j} - \frac{1}{\sqrt{2}} \hat{k} \right) \)
D) \( I a^2 (-\hat{k}) \)
E) \( I a^2 (-\hat{j}) \)
**Explanation of the Diagram:**
The diagram shows a 3D representation of a rectangular loop oriented in the x-y-z coordinate system with a current \( I \) flowing through it.
- The loop is aligned with the coordinate planes such that:
- One surface is parallel to the xz-plane.
- Another surface is parallel to the yz-plane.
- The loop creates a rectangular circuit and the dimensions of the rectangle are given as 'a' for both length and width.
Arrows indicate the direction of the current steadily flowing through the loop:
- \(\hat{x}\): The positive x-direction arrow indicates the current flowing parallel to the x-axis.
- \(\hat{y}\): The positive y-direction arrow indicates the current is flowing parallel to the y-axis.
- \(\hat{z}\): The current is flowing parallel to the z-axis.
Use the right-hand rule: Point the thumb of your right hand in the direction of the current. The curl of your fingers indicates the direction of the magnetic dipole moment (\( \vec{\mu} \)).
The formula for the magnetic dipole moment \( \vec{\mu} \) of a current loop is:
\[ \vec{\mu} = I \cdot (\text{Area Vector}) \]
Calculating the Area Vector:
If we look closely, the loop is perpendicular to the plane forming a rectangle. The effective area vectors are the summ](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff754cbc4-ff18-4747-a125-1e02a9669f8f%2F4aa130ba-17af-44f9-9621-fb0820ba8ced%2Fgb0dqt_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Finding the Magnetic Dipole Moment \( \vec{\mu} \) of the Current Loop**
Consider the problem statement:
Find the magnetic dipole moment \( \vec{\mu} \) of the current loop given in the figure.
**Options:**
A) \( I a^2 (-\hat{i} - \hat{j} + \hat{k}) \)
B) \( I a^2 \left( \frac{1}{\sqrt{2}} \hat{j} - \frac{1}{\sqrt{2}} \hat{k} \right) \)
C) \( I a^2 \left( -\hat{i} - \frac{1}{\sqrt{2}} \hat{j} - \frac{1}{\sqrt{2}} \hat{k} \right) \)
D) \( I a^2 (-\hat{k}) \)
E) \( I a^2 (-\hat{j}) \)
**Explanation of the Diagram:**
The diagram shows a 3D representation of a rectangular loop oriented in the x-y-z coordinate system with a current \( I \) flowing through it.
- The loop is aligned with the coordinate planes such that:
- One surface is parallel to the xz-plane.
- Another surface is parallel to the yz-plane.
- The loop creates a rectangular circuit and the dimensions of the rectangle are given as 'a' for both length and width.
Arrows indicate the direction of the current steadily flowing through the loop:
- \(\hat{x}\): The positive x-direction arrow indicates the current flowing parallel to the x-axis.
- \(\hat{y}\): The positive y-direction arrow indicates the current is flowing parallel to the y-axis.
- \(\hat{z}\): The current is flowing parallel to the z-axis.
Use the right-hand rule: Point the thumb of your right hand in the direction of the current. The curl of your fingers indicates the direction of the magnetic dipole moment (\( \vec{\mu} \)).
The formula for the magnetic dipole moment \( \vec{\mu} \) of a current loop is:
\[ \vec{\mu} = I \cdot (\text{Area Vector}) \]
Calculating the Area Vector:
If we look closely, the loop is perpendicular to the plane forming a rectangle. The effective area vectors are the summ
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