Concept explainers
The time taken for one electron to travel from the generating station to the switching station in the wire.
Answer to Problem 81PQ
The time taken for one electron to travel from the generating station to the switching station in the wire is
Explanation of Solution
Given that the distance between the generating station and the switching station is
Write the expression for the drift velocity of electron in terms of the current density.
Here,
Write the expression for the current density in the wire.
Here,
Use equation (II) in (I).
Write the expression for the time taken for the electron to travel a particular distance through the wire.
Here,
Use equation (III) in (IV).
Conclusion:
Substitute
Therefore, the time taken for one electron to travel from the generating station to the switching station in the wire is
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Chapter 28 Solutions
Physics for Scientist and Engineers (Foundations And Connection; Volume I and II) LLF edition
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