College Physics
College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 20, Problem 1CQ

  1. Can a wire carry a current and still be neutral-that is, have a total charge of zero? Explain.

Expert Solution & Answer
Check Mark
To determine

To explain:

Can a wire carry a current and still be neutral that is, have a total charge of zero.

Explanation of Solution

Introduction:

Current in any conductor is the flow of electron within it.Kirchhoff first law which is based on current at any nodemust be zero. If electron flow within anybody, then total charge at any particular point must be zero

For electric current to flow in conductor there must be a flow of electrons within the conductor. As electrons are negatively charged particle and amount of current flow in a conductor is determined by the flow of electrons. But when electron carried from battery to conductor it must be entered through one terminal and then passes to the other terminal of the battery. So, the charge does notremain in conductor it passes to the battery that is the reason for conductors have a neutral charge.

Conclusion:

Thus, the wire hasa neutral charge if current flow through it due to the conservation of charge at all point of wire.

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Chapter 20 Solutions

College Physics

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