1. As shown in the figure below, two long straight wires are each carrying a current. The left wire carries a current I = 5.6 mA towards the bottom of the page and is located at x = -21 cm. The right wire carries a current I2 = 7.8 mA towards the top of the page and is located at x = 21 cm. (a) Calculate the magnetic field, both magnitude and direction, at point a, which is located at x = 0. (b) Suppose we want to place a third wire carrying a current I3 = 9.8 mA towards the top of the page such that the magnetic field at point o vanishes. At what x position should we place this wire? . (c) Repeat part (b) except now with a wire carrying the same current towards the bottom of the page. I2 a

1. As shown in the figure below, two long straight wires are each carrying a current. The left wire carries a current I = 5.6 mA towards the bottom of the page and is located at x = -21 cm. The right wire carries a current I2 = 7.8 mA towards the top of the page and is located at x = 21 cm. (a) Calculate the magnetic field, both magnitude and direction, at point a, which is located at x = 0. (b) Suppose we want to place a third wire carrying a current I3 = 9.8 mA towards the top of the page such that the magnetic field at point o vanishes. At what x position should we place this wire? . (c) Repeat part (b) except now with a wire carrying the same current towards the bottom of the page. I2 a

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 13OQ: Two long, parallel wires carry currents of 20.0 A and 10.0 A in opposite directions (Fig. OQ22.13)....

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Two long wires, one of which has a semicircular tend of radius R, are positioned as shown in the accompanying figure. If both wires carry a current I, how far apart must then parallel sections be so that the net magnetic field at P is zero? Does the current in the straight wire flow up or down?
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Two long, parallel wires each carry the same current I in the same direction (Fig. OQ22.5). Is the total magnetic field at the point P midway between the wires (a) zero, (b) directed into the page, (c) directed out of the page, (d) directed to the left, or (e) directed to the right? Figure OQ22.5
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