A parallel plate capacitor made of circular plates each of radius $R=6.0\;cm$ has a capacitance $c= 100\;pF$. The capacitor is connected to a $230\;v$ a.c supply with an angular frequency of $300\;rad\;S^{-1}$ . What is the r.m.s value of the conduction current ?.Is the conduction current equal to the displacement current ?