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# A point charge q is situated a large distance r from a

## Problem 4P Chapter 4

Introduction to Electrodynamics | 4th Edition

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Problem 4P

A point charge q is situated a large distance r from a neutral atom of polarizability α. Find the force of attraction between them.

Step-by-Step Solution:

Solution 4P

Step 1 of 5:

Consider a point charge q and a neutral atom is separated by a distance r. The polarizability of the atom is α. This is the ability of the atom to form a dipole. We are going to force of attraction between the atom and the point charge. Before that, we should find the electric field due to the dipole formed by the point charge and the atom.

Step 2 of 5:

The electric field produced by the point charge q is given by

The induced dipole moment due to the field

Substituting (1) in (2)

Step 3 of 5:

Now the point charge and the atom become a dipole producing an electric field Edip. The expression is given by

Where  are unit vectors. The point charge and the atom are in the same line and the angle (θ) between them is 180°. Therefore the above equation becomes

Step 4 of 5

Step 5 of 5

##### ISBN: 9780321856562

This full solution covers the following key subjects: atom, attraction, Charge, distance, Find. This expansive textbook survival guide covers 12 chapters, and 550 solutions. Since the solution to 4P from 4 chapter was answered, more than 418 students have viewed the full step-by-step answer. Introduction to Electrodynamics was written by and is associated to the ISBN: 9780321856562. The answer to “A point charge q is situated a large distance r from a neutral atom of polarizability ?. Find the force of attraction between them.” is broken down into a number of easy to follow steps, and 24 words. This textbook survival guide was created for the textbook: Introduction to Electrodynamics , edition: 4. The full step-by-step solution to problem: 4P from chapter: 4 was answered by , our top Physics solution expert on 07/18/17, 05:41AM.

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A point charge q is situated a large distance r from a

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Get Full Access to Introduction To Electrodynamics - 4 Edition - Chapter 4 - Problem 4p