A long solenoid has 120 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 3.04 cm perpendicular to the solenoid axis. The speed of the electron is 0.0605c (c = speed of light, equal to 2.998 × 108 m/s). Find the current i in the solenoid.

A long solenoid has 120 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 3.04 cm perpendicular to the solenoid axis. The speed of the electron is 0.0605c (c = speed of light, equal to 2.998 × 108 m/s). Find the current i in the solenoid.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 54P: The current in a long solenoid of radius 3 cm and 20 turns cm is varied with time at a rate of 2...

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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

A long solenoid has 120 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 3.04 cm
perpendicular to the solenoid axis. The speed of the electron is 0.0605c (c = speed of light, equal to 2.998 × 108 m/s). Find the current i
in the solenoid.
Number i
Units
A

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