When the starter motor on a car is engaged, there is a 250 A current in the wires between the battery and the motor. Suppose the wires are made of copper and have a total length of 1.5 m. For the steps and strategies involved in solving a similar problem you may view a Video Tutor

When the starter motor on a car is engaged, there is a 250 A current in the wires between the battery and the motor. Suppose the wires are made of copper and have a total length of 1.5 m. For the steps and strategies involved in solving a similar problem you may view a Video Tutor

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 22P: The human body can exhibit a wide range of resistances to current depending on the path of the...

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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

What minimum diameter can the wires have if the voltage drop along the wires is to be less than .45 V?
answer should be in mm

When the starter motor on a car is engaged, there
is a 250 A current in the wires between the battery
and the motor. Suppose the wires are made of
copper and have a total length of 1.5 m.
For the steps and strategies involved in solving a
similar problem, you may view a Video Tutor
Solution.
E

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