A parallel plate capacitor of area `50cm^(2)` and plate separation `3.0 mm` is charged initially to

A parallel plate capacitor of area `50cm^(2)` and plate separation `3.0 mm` is charged initially to `80 mu C`. Due to radio-active source nearby , the medium between the plates gets slightly conducting and the plate loses charge the rate of `1.5 xx 10^(-8) "Cs"^(-1)`. what is the magnitude and direction of displacement current ? What is the magnetic field between the plates