Coulumb's Law Permittivity

Description:

Permittivity

Permittivity is an electrical characteristics of medium due to which it absorbs effects of charge due to which force is applied on other charge.

• It is denoted by E (epsilon).
• It is expressed in number and unit.
• Relation between coulumb’s constant (C) and epsilon (E) is

C = 1/4πε

Where value of E depends on Medium.

• The standard of force between the two charges.

  F = 1/4πε q₁q₂/r²

• The unit of E is C²N^-1 M^-2

  Where,

  • ‘C’ denotes coulomb.

  • ‘N’ denotes Newton.

  • ‘m’ denotes meter.

• In free space the value of E is 8.85 × 10^-12C²N^-1M^-2

  Value to remember C = 9 × 10⁹Nm²C²

  E = 8.85 × 10^-12C²N^-1M^-2