What is electric permitivity?

 

Permittivity is a measure of the electric polarizability of a dielectric material. It tells you how much a material allows an electric field to penetrate into it and how easily the charges in it get polarized.

High permittivity means a material is highly polarizable in an electric field, and hence offers higher resistance to the applied electric field.

High permittivity means a material is highly polarizable in an electric field. Instead of allowing an electric field to pass easily, the material's molecules strongly align with the field, creating an opposing internal field that resists and reduces the applied field and hence reduces the net field strength inside it , (while storing significantly more electrical energy).

Key Implications of High Permittivity

• Increased Capacitance: High permittivity is the foundation of energy storage in capacitors. Placing a high-permittivity "dielectric" material between conductive plates drastically increases the amount of charge the capacitor can hold at a given voltage. 
• Weaker Electrostatic Force: According to Coulomb’s law, a higher permittivity medium decreases the electrostatic force between charged particles. 
Real-World Examples: Materials like water, barium titanate, and ceramics have high permittivity, making them critical in manufacturing electronic components like miniature multilayer ceramic capacitors (MLCCs) found in modern smartphones and computers.