A circular loop of resistance R=2.15 N and area A=0.08 m- is placed in a uniform magnetic field. From t=0 on, the field start varying with time according to B(t)=t+20t+5, w B is in mT andt in seconds. Find the time t (in s) at which the current passing by the loop is 7.6 mA.

A circular loop of resistance R=2.15 N and area A=0.08 m- is placed in a uniform magnetic field. From t=0 on, the field start varying with time according to B(t)=t+20t+5, w B is in mT andt in seconds. Find the time t (in s) at which the current passing by the loop is 7.6 mA.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 26P: A square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic...

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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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A circular loop of resistance R=2.15 N and area A=0.08 m- is placed in a uniform magnetic field. From t=0 on, the field start varying with time according to B(t)=t2+20t+5, where
B is in mT andt in seconds. Find the time t (in s) at which the current passing by the loop is 7.6 mA.

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