Two long straight wires are perpendicular to the page and separated by a distance d1 = 0.850 cm. Wire 1 carries a current 8.40 A into the page. The magnetic field at point P, a distance d2 = 4.45 cm below wire 2, is zero (0 T). What must be the current in wire 2? 8.40 A, out of the page. 7.05 A, out of the page. 0 A, there is no current. 44.0 A, into the page.

Two long straight wires are perpendicular to the page and separated by a distance d1 = 0.850 cm. Wire 1 carries a current 8.40 A into the page. The magnetic field at point P, a distance d2 = 4.45 cm below wire 2, is zero (0 T). What must be the current in wire 2? 8.40 A, out of the page. 7.05 A, out of the page. 0 A, there is no current. 44.0 A, into the page.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 14CQ: What is die basic operation of an ohmmeter as it measures a resistor?

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