AC voltage $V\left(t\right) = 20 \sin \omega t$ of frequency 50Hz is applied to a parallel plate capacitor. The separation between the plates is 2mm and area is 1m². The amplitude of oscillating displacement current for applied AC voltage is___________ $\mu A.(Take{\in }_0=8.85\times {10}^{-12}F/m)$

(Round off to nearest integer)