# Ery long dielectric cylinder of radius a and dielectric constant er is placed in a field Eo perpendicular to its

###### Question:

ery long dielectric cylinder of radius a and dielectric constant er is placed in a field Eo perpendicular to its A v axis. The electric potential inside the cylinder is r in and the electric potential outside the cylinder is The electric field inside of the cylinder is and the electric field outside the cylinder is n11 out-_E Find the surface charge density and take the cylinder axis to be the z-axis and take Eo - Eo

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