Needle-plane electrode system

QuickField simulation example

This electrode system is a classic example of the electric field concentration near the sharp tip of the needle.

Problem Type
Axisymmetric problem of electrostatics.

Geometry

Given
Relative permittivity of air ε = 1;
Needle potential U = 1 kV
Plate potential 0 V

Task
Determine the electric field distribution

Results
Electric potential distribution

Electric field strength distribution near the needle tip.

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