Question

Which of the following statements is true? (a) Insulators do not contain electrons. (b) Some of the electrons in a conductor are free to move through the material. (c) Conductors always contain more electrons than insulators. (d) The atoms in a conductor can move about but those in an insulator cannot move.

Name: Problem 8, Chapter 18: Objective Physics for NEET
Uploaded: 2021-09-10T12:00:42-08:00
Duration: 2 min 18 s
Channel: Sachin Rao
Description: Which of the following statements is true? (a) Insulators do not contain electrons. (b) Some of the electrons in a conductor are free to move through the material. (c) Conductors always contain more electrons than insulators. (d) The atoms in a conductor can move about but those in an insulator cannot move.

   Which of the following statements is true?
(a) Insulators do not contain electrons.
(b) Some of the electrons in a conductor are free to move through the material.
(c) Conductors always contain more electrons than insulators.
(d) The atoms in a conductor can move about but those in an insulator cannot move.

Objective Physics for NEET

Abhay Kumar 2nd Edition

Chapter 18, Problem 8

Instant Answer

Solved by Expert Sachin Rao

09/10/2021

Step 1

Insulators are materials that do not allow free flow of electrons from atom to atom, while conductors are materials that allow free flow of electrons. Show more…

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Which of the following statements is true? (a) Insulators do not contain electrons. (b) Some of the electrons in a conductor are free to move through the material. (c) Conductors always contain more electrons than insulators. (d) The atoms in a conductor can move about but those in an insulator cannot move.

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Key Concepts

Conductors

Conductors are materials that permit the movement of charge due to the presence of free electrons. Their atomic structure allows one or more electrons to detach from atoms and move throughout the material, making them effective for electrical conduction.

Insulators

Insulators are materials that resist the flow of electric charge because their electrons are tightly bound to their atoms. This lack of free electrons prevents the easy movement of charge, thereby hindering electrical conduction.

Free Electrons

Free electrons are electrons that are not tightly bound to any specific atom, enabling them to move freely in a material. In conductors, these electrons facilitate electrical conduction by moving under the influence of an electric field.

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