Please answer for that A point charge q is situated a large distance r from a ne

Question

Please answer for that A point charge q is situated a large distance r from a neutral atom of polarizability a. Find the face of attraction between them Expert Answer alberttv answered this 400 answers Was this answer helpfu electric field due to q is E·=-- ) then induced dipole moment of the atom is p-aE.-a( 4 FIELD OF THIS DIPOLE AT THE LOCATION OF q is put = in the above equation then Eq = q* 4re.-' ( 4t·-), (attractive then force on q due to dipole is F force View comments (2) Why should i put theta-pi? cant understand

Explanation / Answer

It is because the charge is placed at a large distance from the neutral atom. For large distances the angle subtended by the dipole becomes pi.

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