The lightbulb in the circuit shown in the sketch has a resistance of 22 and consumes 5.0 W of power; the rod is 1.25 m long and moves to the left with a constant speed of 3.1 m/s. What is the strength of the magnetic field? Answer Units: [T] B R external magnetic

The lightbulb in the circuit shown in the sketch has a resistance of 22 and consumes 5.0 W of power; the rod is 1.25 m long and moves to the left with a constant speed of 3.1 m/s. What is the strength of the magnetic field? Answer Units: [T] B R external magnetic

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter14: Inductance

Section: Chapter Questions

Problem 51P: A current of 1.2 A is flowing in a coaxial cable whose outer radius is five times its inner radius....

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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

The lightbulb in the circuit shown in the sketch has a resistance of 22
and consumes 5.0 W of power; the rod is 1.25 m long and moves to the
left with a constant speed of 3.1 m/s.
What is the strength of the magnetic field?
Answer Units: [T]
B
R
external
magnetic

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