1. A student has mapped out a few magnetic field lines using a compass, as shown in the figure.
Rank points C, D, and E according to the magnitude of the magnetic field at those locations, from greatest to least (for example, if there were points P, Q and R, and the field at P and R were the same and both were greater than the field at Q, you would write "P = R > Q").
2. The student then places the compass at point C. Which of the following best represents the orientation of the compass needle?
3. The student then moves the compass to point D. Which of the following best represents the orientation of the compass needle?
4. The student then places the compass inside a hollowed-out magnet as shown.
Which of the following best represents the orientation of the compass needle?
1. A student has mapped out a few magnetic field lines using a compass, as shown in the figure.
Rank points C, D, and E according to the magnitude of the magnetic field at those locations, from greatest to least (for example, if there were points P, Q and R, and the field at P and R were the same and both were greater than the field at Q, you would write "P = R > Q").
2. The student then places the compass at point C. Which of the following best represents the orientation of the compass needle?
3. The student then moves the compass to point D. Which of the following best represents the orientation of the compass needle?
4. The student then places the compass inside a hollowed-out magnet as shown.
Which of the following best represents the orientation of the compass needle?
Related textbook solutions
Related questions
In this problem, you will be asked to calculate the magnetic field due to a set of two wires with antiparallel currents as shown in the diagram (Figure 1) . Each of the wires carries a current of magnitude I. The current in wire 1 is directed out of the page and that in wire 2 is directed into the page. The distance between the wires is 2d. The x axis is perpendicular to the line connecting the wires and is equidistant from the wires.
As you answer the questions posed here, try to look for a pattern in your answers.
Part A
Which of the vectors best represents the direction of the magnetic field created at point K (see the diagram in the problem introduction) by wire 1 alone?
Enter the number of the vector with the appropriate direction.
Part B
Which of the vectors best represents the direction of the magnetic field created at point K by wire 2 alone?
Enter the number of the vector with the appropriate direction.
Part C
Which of these vectors best represents the direction of the net magnetic field created at point K by both wires?
Enter the number of the vector with the appropriate direction.
Part D
Point M is located a distance 2d from the midpoint between the two wires. Find the magnitude of the magnetic field B1M created at point M by wire 1.
Express your answer in terms of I, d, and appropriate constants.
|
|
|||
| B1M= |
Part E
Find the magnitude of the net magnetic field BM created at point M by both wires.
Express your answer in terms of I, d, and appropriate constants.
|
|
|||
| BM= |
Two long, straight wires cross each other at right angles, and each carries the same current as in the shown fig.
 |
Which of the following statements are true regarding the total magnetic field at the various points due to the two wires? (There may be more than one correct statement.)
(a) The field is strongest at points B and D.
(b) The field is strongest at points A and C.
(c) The field is out of the page at point B and into the page at point D.
(d) The field is out of the page at point C and out of the page at point D.
(e) The field has the same magnitude at all four points.
