★★ A long copper wire of length L carries an electric current, I. This wire can be formed into a coil consisting of multiple loops while preserving the total length of the wire. Find the optimal number of loops in the coil to maximize the torque on the coil when it carries a cur- rent, I, in a uniform magnetic field, B. Prove that the maximum value of this torque is = (1/4)L²IB.

★★ A long copper wire of length L carries an electric current, I. This wire can be formed into a coil consisting of multiple loops while preserving the total length of the wire. Find the optimal number of loops in the coil to maximize the torque on the coil when it carries a cur- rent, I, in a uniform magnetic field, B. Prove that the maximum value of this torque is = (1/4)L²IB.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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