Two long, parallel wires separated by 2.50 cm carry currents inopposite directions. The current in one wire is 1.25 A, and thecurrent in the other is 3.50 A. (a) Find the magnitude of theforce per unit length that one wire exerts on the other. (b) Isthe force attractive or repulsive?

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 81AP: A 5.0-m section of a long, straight wire carries a current of 10 A while in a uniform magnetic field...
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Two long, parallel wires separated by 2.50 cm carry currents in
opposite directions. The current in one wire is 1.25 A, and the
current in the other is 3.50 A. (a) Find the magnitude of the
force per unit length that one wire exerts on the other. (b) Is
the force attractive or repulsive?

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