Alternating Current

A capacitor and a resistor of resistance $100 \sqrt{3} \Omega$ are connected in series to an AC source of voltage $100 \sin (200 t) \mathrm{V}$, where ' $t$ ' is time in second. If the phase difference between the voltage and the current in the circuit is $30^{\circ}$, then the capacitance of the capacitor is