PHY 2049 Midterm: University of Florida PHY 2049 exam1spr10

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turquoisegnu128

7 Mar 2019

School

University of Florida

Department

Physics

Course

PHY 2049

Professor

All

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Document Summary

Exam 2 solutions: what is the magnitude and direction of the magnetic eld at the origin of the shown arrangement of current-carrying wires. Each wire carries a current of i and points either into or out of the page as indicated, and each wire is a distance d from the origin. Solution: each wire produces a magnetic eld at the origin of magnitude oi/(2 d). The two wires on the x-axis each produce magnetic elds in the j direction. The two wires on the y-axis each produce magnetic elds in the i direction. Sum the four magnetic elds to get the net magnetic eld at the origin: a wire is bent into the shown planar shape and carries a current i = What is the magnitude of the magnetic eld at the center of the loop, c if the radius of the loop is.

Related Questions

Two long, straight, parallel wires carry currents that are directed perpendicular to the page as shown in Figure P30.9. Wire 1 carries a current I₁, into the page (in the negative z-direction), and passes through the x-axis at x = +α. Wire 2 passes through the x-axis at x = –2a and carries an unknown current I₂. The total magnetic field at the origin due to the current-carrying wires has a magnitude The current I₂ can have either of two possible values, Find the value of with the smaller magnitude, stating it in terms of I₁, and giving its direction.

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erinporpoise800

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=

blackdolphin399

Two long straight wires, one above the other, are separated by a distance 2a and are parallel to the x axis. Let the +y axis be in the plane of the wires in the direction from the lower wire to the upper wire. Each wire carries current I in the +x direction. What are the magnitude and direction of the net magnetic field of the two wires at a point in the plane of the wires a) midway between them, b) at a distance a above the upper wire and c) at a distance a below the wire?

PHY 2049 Midterm: University of Florida PHY 2049 exam1spr10

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