Answered: The distance between two magnetic poles…

The distance between two magnetic poles is doubled. Then the force between them a. Decreases by four times b. Decreases by two times c. Increases by two time d. Increases by four times

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter28: Magnetic Fields

Section: Chapter Questions

Problem 43AP: A proton having an initial velocity of 20.0iMm/s enters a uniform magnetic field of magnitude 0.300...

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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

12. The distance between two magnetic poles is doubled. Then the force between
them
a. Decreases by four times
b. Decreases by two times
c. Increases by two time
d. Increases by four times

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