Griffiths problem 4.11 page 170(adsbygoogle = window.adsbygoogle || []).push({});

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>> a

L<<a

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...

please help!

than kyou for all teh advice!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electric field of a dipole

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**