A container has a base of 50 cm x 5 cm and height 50 cm, as shown in the figure. It has two parallel electrically conducting walls each of area 50 cm x 50 cm. The remaining walls of the container are thin and non-conducting. The container is being filled with a liquid of dielectric constant 3 at a uniform rate of 250 cm 3 s -1 . What is the value of the capacitance of the container after 10 seconds? [Given: Permittivity of free space = 9 x 10 -12 C 2 N -1 m -2 , the effects of the non-conducting walls on the capacitance are negligible]