|Nov22-06, 04:29 PM||#1|
Electric field of a dipole
Griffiths problem 4.11 page 170
A short cylinder of radius a and lenght L carries a frozen in uniform polarization P parallel to its axis. Find the bound charge and sketch theelectric field for
L approximately equal to a
well i have no problem finding the bound charge but the electricfield.. would in eed to find an explicit expression or just sketch it qualitatively??
Suppoose L << a then it look a dipole doesnt it and the field falls off like 1/r^3
suppose L >> a then it looks like an infinite rod and the electric field falls off like 1/r
but For L approx equal to a im stumped...
than kyou for all teh advice!
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