(a) A small region of an impure silicon crystal with dimensions 1.25 × 10-6 m ×10-3x10-3 m has only the ions (with charge +1.6 10-19 C) present with a volume density of1025/m³. The rest of the crystal volume contains equal densities of electrons (with charge-1.6 x 10-19 C) and positive ions. Find the net total charge of the crystal.

For the region which contains only the ions, the volume density of charge will be…

A small region of an impure silicon crystal with dimensions 1.25 × 10-6 m ×10-3 m ×10-3 m has only the ions (with charge +1.6 10-19 C) present with a volume density of 10²5/m³. The rest of the crystal volume contains equal densities of electrons (with charge -1.6 × 10¬19 C) and positive ions. Find the net total charge of the crystal.

A small region of an impure silicon crystal with dimensions 1.25 × 10-6 m ×10-3 m ×10-3 m has only the ions (with charge +1.6 10-19 C) present with a volume density of 10²5/m³. The rest of the crystal volume contains equal densities of electrons (with charge -1.6 × 10¬19 C) and positive ions. Find the net total charge of the crystal.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter1: Atomic Structure

Section: Chapter Questions

Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?

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Types of Charge Carriers

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Question

(a) A small region of an impure silicon crystal with dimensions 1.25 × 10-6 m ×10-3
x10-3 m has only the ions (with charge +1.6 10-19 C) present with a volume density of
1025/m³. The rest of the crystal volume contains equal densities of electrons (with charge
-1.6 x 10-19 C) and positive ions. Find the net total charge of the crystal.

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