The circuit shown in the figure consists of a charged capacitor of capacity 3   μ F and a charge…

The circuit shown in the figure consists of a charged capacitor of capacity $3 \mu \mathrm{F}$ and a charge of $30 \mu \mathrm{C}.$ At time $t=0,$ when the key is closed, the value of current flowing through the $5 \mathrm{M}\Omega$ resistor is $x \mathrm{\mu A}.$ The value of $x$ to the nearest integer is