] Two very long parallel conductors carry equal current along the same direction. Increasing the distance between them by a factor of 3 and decreasing both currents equally by a factor of 1/7 will change the magnitude of the original magnetic force per unit length between the two by a factor that is most nearly (A) 7²/3. (B) 7/3². (C) 1/(7²-3). (D) 1/(7-3). (E) 3/7².

] Two very long parallel conductors carry equal current along the same direction. Increasing the distance between them by a factor of 3 and decreasing both currents equally by a factor of 1/7 will change the magnitude of the original magnetic force per unit length between the two by a factor that is most nearly (A) 7²/3. (B) 7/3². (C) 1/(7²-3). (D) 1/(7-3). (E) 3/7².

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 109CP: A long-rigid wire lies along the x-axis and cairns a current of 2.5 A in the positive x-direction....

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