EBK PHYSICS FOR SCIENTISTS AND ENGINEER
6th Edition
ISBN: 9781319321710
Author: Mosca
Publisher: VST
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Chapter 25, Problem 1P
To determine
The reason for the electric fields within the material of conductors can be discussed in the chapter when it is concluded that there is no electric field inside a conductor in electrostatic equilibrium.
Expert Solution & Answer
Answer to Problem 1P
Electric field inside a conductor is zero only when there is electrostatic equilibrium. The electric field within the material of a conductor is not zero when the external electric field is time varying.
Explanation of Solution
Introduction: Net electric field within the material of a conductor is zero only under electrostatic conditions. This implies the electric field inside a conductor will be zero when the charges are stationary.
A conductor has free electrons. The free charge carriers will experience a force under the influence of an external electric field and they will accelerate. The accelerated motion of the charge carriers implies that the conductor is not in equilibrium. When the external electric field is time varying, there will be a net electric field inside the conductor up to a small depth. This is known as skin depth.
Conclusion:Thus, it is reasonable to discuss the electric field within the material of the conductor in the chapter since the net electric field inside the conductor is zero only under electrostatic conditions; not when the field is time varying.
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Chapter 25 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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