In a large flashlight, the distance from the on-off switch and the light bulb is 10.8 cm. (a) Calculate the drift velocity for the electrons to drift this distance if the flashlight wires are made of copper, with a radius of 0.511 mm, and carry a current of 1.1 A? There are 8.49X1028 electrons per unit m³. Drift velocity, Vi m/s (b) How long does it take an electron to travel the distance from the on-off switch to the light-bulb? Time, t: min (c) Does this time seem reasonable? Does it explain why the flashlight starts instantly? Reflect on these questions.

In a large flashlight, the distance from the on-off switch and the light bulb is 10.8 cm. (a) Calculate the drift velocity for the electrons to drift this distance if the flashlight wires are made of copper, with a radius of 0.511 mm, and carry a current of 1.1 A? There are 8.49X1028 electrons per unit m³. Drift velocity, Vi m/s (b) How long does it take an electron to travel the distance from the on-off switch to the light-bulb? Time, t: min (c) Does this time seem reasonable? Does it explain why the flashlight starts instantly? Reflect on these questions.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 15P: If the current carried by a conductor is doubled, what happens to (a) the charge carrier density,...

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