Capacitance of Parallel Plate Capacitor

Physics

definition

Potential difference between the plates of a parallel plate capacitor

For a uniform electric field, the potential difference between the plates of a capacitor(for air in between) is  :

example

Capacitance of a parallel plate capacitor

 Example - A parallel plate capacitor consists of two metal plates, each of area 150  separated by a vacuum gap d= 0.60 cm thick. What is the capacitance of this device?
What potential difference must be applied between the plates if the capacitor is to hold a charge of magnitude  
 on each plate?
The capacitance of a parallel plate capacitor(for air in between) is 



 
The voltage difference  between the plates and the magnitude of the charge Q stored on each plate are related via
So