**Question:**To induce a current in a wire coil, a magnet must be:- Spinning- At rest- Moving- Strong**Explanation:**This multiple-choice question is related to the principles of electromagnetism. To induce an electric current in a wire coil, the magnet needs to change its position relative to the coil, which means the correct choice is "moving." This movement of the magnet causes a change in the magnetic field within the coil, leading to the induction of an electromotive force and, consequently, an electric current, according to Faraday's law of electromagnetic induction.

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To induce a current in a wire coil, a magnet must be spinning at rest moving O strong

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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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

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