Main >>Applications >> Sample problems >> Needle-plane electrodes
This electrode system is a classical example of the electric field concentration near the sharp tip of the needle.
Axisymmetric problem of electrostatics.
All dimensions in mm.
Relative permittivity of air ε = 1;
Needle potential U = 1 kV
Plate potential 0 V
Determine the electric field distribution
Electric potential distribution
Electric field strength distribution near the needle tip.