Capacitance of a Capacitor

[iamakda]

Dear all,

which formula is correct for the calculation of the capacitance?

1). C = k*e0*A/d or 2). C = e0*er*A/d ???

e= epsilon
A=area of the plates
d=distance between the plates
k=dielectric constant

and if i want to calculate the capacitance in Farads then in what units the Area and Distance should be:

Area in m2 or cm2 ???
Distance in m or cm????

Thanks for the help.

[spleenharvester]

Re: Capacitance of a Capacitor

Never seen the equation before but area should be m2 and distance in m, given they are SI Units. I may be wrong.