Answered: Determine the magnetic force that acts…

Determine the magnetic force that acts on the coil and the cone. The voice coil and cone have a combined mass of 0.0200 kg. Find their acceleration.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 23P: An electron moving at 4.00103 m/s in a 1.25-T magnetic field experiences a magnetic force of...

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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.

Question

4. The voice coil of a speaker has a diameter of 0.005 m, contains 55 turns of wire, and is placed in a 0.10-T magnetic
field. The current in the voice coil is 2.0 A.
(a) Determine the magnetic force that acts on the coil and the cone.
(b) The voice coil and cone have a combined mass of 0.0200 kg. Find their acceleration.
Cone
4
Permanent magnet
Backpanel of
Speaker
temas
Mag
field

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