Question
Thu April 14, 2011 By: Saksham Shrivastava

what is permittivity of free space

Expert Reply
Thu April 14, 2011
 
In COULOMB'S LAW
The force exerted by a charge particle is given by 
where q1 and q2 are the charges on the particle, r is the separation between them and k is a constant.
The constant k is often written as 
The constant  is called the permittivity of free space and its value is 
Ask the Expert