Spheroidal Protrusion in a Uniform Electric Field

protrusion configuration

height h

1

aspect ratio h/r

5

This Demonstration shows how the electric field is produced by a spheroidal protrusion. The main feature is the enhancement of the field around the tip. The electric field is shown by coloring and arrows, and the corresponding equipotential lines are drawn as white dashed lines. You can vary the height of protrusion

h

and the aspect ratio

h/r

, where

r

is the radius of the protrusion. The indicated maximum electric field is the value at the tip of the spheroid. All field values are normalized to the applied uniform field

E

0

.