Chapter 18: Problem 6
What is the distinction between electronic and ionic conduction?
Chapter 18: Problem 6
What is the distinction between electronic and ionic conduction?
All the tools & learning materials you need for study success - in one app.
Get started for free(a) Calculate the number of free electrons per cubic meter for silver, assuming that there are \(1.3\) free electrons per silver atom. The electrical conductivity and density for \(\mathrm{Ag}\) are \(6.8 \times 10^{7}(\Omega \cdot \mathrm{m})^{-1}\) and \(10.5 \mathrm{~g} / \mathrm{cm}^{3}\), respectively. (b) Now, compute the electron mobility for \(\mathrm{Ag}\).
An \(n\)-type semiconductor is known to have an electron concentration of \(5 \times 10^{17} \mathrm{~m}^{-3} .\) If the electron drift velocity is \(350 \mathrm{~m} / \mathrm{s}\) in an electric field of \(1000 \mathrm{~V} / \mathrm{m}\), calculate the conductivity of this material.
What are the two functions that a transistor may perform in an electronic circuit?
(a) Compute the electrical conductivity of a cylindrical silicon specimen \(7.0 \mathrm{~mm}(0.28\) in.) diameter and \(57 \mathrm{~mm}(2.25\) in.) in length in which a current of \(0.25\) A passes in an axial direction. A voltage of \(24 \mathrm{~V}\) is measured across two probes that are separated by \(45 \mathrm{~mm}\) (1.75 in.). (b) Compute the resistance over the entire \(57 \mathrm{~mm}\) (2.25 in.) of the specimen.
Briefly state what is meant by the drift velocity and mobility of a free electron.
What do you think about this solution?
We value your feedback to improve our textbook solutions.