STATIC ELECTRICITY

1. 
   where F is the force between two charges Q₁ and Q₂ a distance d apart in a medium of permittivity .

2. 
   The permittivity of a medium is given by its relative permittivity times the permittivity of a vacuum.
3. 
   If a charge Q experience a force F when placed in an electric field, then the field strength is given by E.
4. 
   where W is the energy gained when a charge Q is accelerated by a potential difference V.
5. 
   where C is the capacitance of a conductor which has a charge Q and a potential V.
6. 
   where C is the capacitance of a parallel plate capacitor. The common area of the plates is A. The distance between the plates is d. The permittivity of the medium between the plates is .
7. 
   where W is the energy stored in a capacitor of capacitance C with a potential V.