Hi,

 

If a capacitor is present in a DC circuit, no current flows.

 

In  an AC circuit, Resistance due to a capacitor is 1/C where C is capacitance and  is the frequency of the AC source.

SO, current = V / Resistance of capacitor

                  =  V / (1/C)

                  = VC

 

This is when only capacitor is there in the circuit,

If inductor and resistor is also present, then net resistance(impedence) is

     Sqrt(R² + ( X_c - X_l  )² )  ------------------- Eq. 1

 

If only capacitor and resistance,  X_{l ^{is 0.}}

 

Hope you got it !!!!!!